Home / 486,151.40-729,227.10-423,943.40

Finding the Fourth Proportional to 486,151.40, 729,227.10 and 423,943.40

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Solution

The fourth proportional to 486,151.40, 729,227.10 and 423,943.40 is: 635,915.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,151.40 : 729,227.10 = 423,943.40 : x
  2. Step 2: Convert to fraction form
    486,151.40/729,227.10 = 423,943.40/x
  3. Step 3: Cross multiply
    486,151.40x = 729,227.10 × 423,943.40
  4. Step 4: Simplify right side
    486,151.40x = 309,151,016,146.14
  5. Step 5: Solve for x
    x = 309,151,016,146.14/486,151.40
  6. Step 6: Final answer
    x = 635,915.10

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Double scale
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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.