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Finding the Fourth Proportional to 661,332.28, 912,709.90 and 374,821.60

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Solution

The fourth proportional to 661,332.28, 912,709.90 and 374,821.60 is: 517,294.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,332.28 : 912,709.90 = 374,821.60 : x
  2. Step 2: Convert to fraction form
    661,332.28/912,709.90 = 374,821.60/x
  3. Step 3: Cross multiply
    661,332.28x = 912,709.90 × 374,821.60
  4. Step 4: Simplify right side
    661,332.28x = 342,103,385,053.84
  5. Step 5: Solve for x
    x = 342,103,385,053.84/661,332.28
  6. Step 6: Final answer
    x = 517,294.25

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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.