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Finding the Fourth Proportional to 720,418.57, 993,737.13 and 462,207.71

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Solution

The fourth proportional to 720,418.57, 993,737.13 and 462,207.71 is: 637,564.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,418.57 : 993,737.13 = 462,207.71 : x
  2. Step 2: Convert to fraction form
    720,418.57/993,737.13 = 462,207.71/x
  3. Step 3: Cross multiply
    720,418.57x = 993,737.13 × 462,207.71
  4. Step 4: Simplify right side
    720,418.57x = 459,312,963,199.27
  5. Step 5: Solve for x
    x = 459,312,963,199.27/720,418.57
  6. Step 6: Final answer
    x = 637,564.03

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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.