Home / 487,631.40-731,447.10-404,687.40

Finding the Fourth Proportional to 487,631.40, 731,447.10 and 404,687.40

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Solution

The fourth proportional to 487,631.40, 731,447.10 and 404,687.40 is: 607,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,631.40 : 731,447.10 = 404,687.40 : x
  2. Step 2: Convert to fraction form
    487,631.40/731,447.10 = 404,687.40/x
  3. Step 3: Cross multiply
    487,631.40x = 731,447.10 × 404,687.40
  4. Step 4: Simplify right side
    487,631.40x = 296,007,425,136.54
  5. Step 5: Solve for x
    x = 296,007,425,136.54/487,631.40
  6. Step 6: Final answer
    x = 607,031.10

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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.