Home / 811,938.10-1,217,907.15-251,029.30

Finding the Fourth Proportional to 811,938.10, 1,217,907.15 and 251,029.30

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Solution

The fourth proportional to 811,938.10, 1,217,907.15 and 251,029.30 is: 376,543.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,938.10 : 1,217,907.15 = 251,029.30 : x
  2. Step 2: Convert to fraction form
    811,938.10/1,217,907.15 = 251,029.30/x
  3. Step 3: Cross multiply
    811,938.10x = 1,217,907.15 × 251,029.30
  4. Step 4: Simplify right side
    811,938.10x = 305,730,379,329.50
  5. Step 5: Solve for x
    x = 305,730,379,329.50/811,938.10
  6. Step 6: Final answer
    x = 376,543.95

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Double scale
Find fourth proportional to 811,939.10, 1,217,908.65 and 251,030.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.