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Finding the Fourth Proportional to 672,563.92, 928,397.28 and 492,704.36

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Solution

The fourth proportional to 672,563.92, 928,397.28 and 492,704.36 is: 680,121.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,563.92 : 928,397.28 = 492,704.36 : x
  2. Step 2: Convert to fraction form
    672,563.92/928,397.28 = 492,704.36/x
  3. Step 3: Cross multiply
    672,563.92x = 928,397.28 × 492,704.36
  4. Step 4: Simplify right side
    672,563.92x = 457,425,387,668.14
  5. Step 5: Solve for x
    x = 457,425,387,668.14/672,563.92
  6. Step 6: Final answer
    x = 680,121.81

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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.