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Finding the Fourth Proportional to 656,992.31, 984,210.28 and 431,668.13

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Solution

The fourth proportional to 656,992.31, 984,210.28 and 431,668.13 is: 646,662.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,992.31 : 984,210.28 = 431,668.13 : x
  2. Step 2: Convert to fraction form
    656,992.31/984,210.28 = 431,668.13/x
  3. Step 3: Cross multiply
    656,992.31x = 984,210.28 × 431,668.13
  4. Step 4: Simplify right side
    656,992.31x = 424,852,212,475.73
  5. Step 5: Solve for x
    x = 424,852,212,475.73/656,992.31
  6. Step 6: Final answer
    x = 646,662.38

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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.