Home / 1,215,338,135.18-1,677,168,328.39-658,421,182.25

Finding the Fourth Proportional to 1,215,338,135.18, 1,677,168,328.39 and 658,421,182.25

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Solution

The fourth proportional to 1,215,338,135.18, 1,677,168,328.39 and 658,421,182.25 is: 908,622,153.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,338,135.18 : 1,677,168,328.39 = 658,421,182.25 : x
  2. Step 2: Convert to fraction form
    1,215,338,135.18/1,677,168,328.39 = 658,421,182.25/x
  3. Step 3: Cross multiply
    1,215,338,135.18x = 1,677,168,328.39 × 658,421,182.25
  4. Step 4: Simplify right side
    1,215,338,135.18x = 1,104,283,153,606,920,064
  5. Step 5: Solve for x
    x = 1,104,283,153,606,920,064/1,215,338,135.18
  6. Step 6: Final answer
    x = 908,622,153.49

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,215,338,136.18, 1,677,168,329.77 and 658,421,183.25
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.