Home / 1,219,874,321.12-1,683,437,085.24-662,957,483.12

Finding the Fourth Proportional to 1,219,874,321.12, 1,683,437,085.24 and 662,957,483.12

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Solution

The fourth proportional to 1,219,874,321.12, 1,683,437,085.24 and 662,957,483.12 is: 914,887,045.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,874,321.12 : 1,683,437,085.24 = 662,957,483.12 : x
  2. Step 2: Convert to fraction form
    1,219,874,321.12/1,683,437,085.24 = 662,957,483.12/x
  3. Step 3: Cross multiply
    1,219,874,321.12x = 1,683,437,085.24 × 662,957,483.12
  4. Step 4: Simplify right side
    1,219,874,321.12x = 1,116,047,213,021,579,264
  5. Step 5: Solve for x
    x = 1,116,047,213,021,579,264/1,219,874,321.12
  6. Step 6: Final answer
    x = 914,887,045.08

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Half scale
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Double scale
Find fourth proportional to 1,219,874,322.12, 1,683,437,086.62 and 662,957,484.12
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.