Home / 749,309.31-1,034,141.31-491,403.15

Finding the Fourth Proportional to 749,309.31, 1,034,141.31 and 491,403.15

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Solution

The fourth proportional to 749,309.31, 1,034,141.31 and 491,403.15 is: 678,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,309.31 : 1,034,141.31 = 491,403.15 : x
  2. Step 2: Convert to fraction form
    749,309.31/1,034,141.31 = 491,403.15/x
  3. Step 3: Cross multiply
    749,309.31x = 1,034,141.31 × 491,403.15
  4. Step 4: Simplify right side
    749,309.31x = 508,180,297,279.13
  5. Step 5: Solve for x
    x = 508,180,297,279.13/749,309.31
  6. Step 6: Final answer
    x = 678,198.30

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Double scale
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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.