Home / 743,139.46-1,025,531.53-403,605.28

Finding the Fourth Proportional to 743,139.46, 1,025,531.53 and 403,605.28

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Solution

The fourth proportional to 743,139.46, 1,025,531.53 and 403,605.28 is: 556,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,139.46 : 1,025,531.53 = 403,605.28 : x
  2. Step 2: Convert to fraction form
    743,139.46/1,025,531.53 = 403,605.28/x
  3. Step 3: Cross multiply
    743,139.46x = 1,025,531.53 × 403,605.28
  4. Step 4: Simplify right side
    743,139.46x = 413,909,940,314.48
  5. Step 5: Solve for x
    x = 413,909,940,314.48/743,139.46
  6. Step 6: Final answer
    x = 556,974.78

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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.