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Finding the Fourth Proportional to 487,247.67, 729,099.90 and 402,217.11

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Solution

The fourth proportional to 487,247.67, 729,099.90 and 402,217.11 is: 601,863.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,247.67 : 729,099.90 = 402,217.11 : x
  2. Step 2: Convert to fraction form
    487,247.67/729,099.90 = 402,217.11/x
  3. Step 3: Cross multiply
    487,247.67x = 729,099.90 × 402,217.11
  4. Step 4: Simplify right side
    487,247.67x = 293,256,454,679.29
  5. Step 5: Solve for x
    x = 293,256,454,679.29/487,247.67
  6. Step 6: Final answer
    x = 601,863.23

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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.