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Finding the Fourth Proportional to 661,188.12, 912,404.62 and 374,711.64

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Solution

The fourth proportional to 661,188.12, 912,404.62 and 374,711.64 is: 517,082.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,188.12 : 912,404.62 = 374,711.64 : x
  2. Step 2: Convert to fraction form
    661,188.12/912,404.62 = 374,711.64/x
  3. Step 3: Cross multiply
    661,188.12x = 912,404.62 × 374,711.64
  4. Step 4: Simplify right side
    661,188.12x = 341,888,631,503.78
  5. Step 5: Solve for x
    x = 341,888,631,503.78/661,188.12
  6. Step 6: Final answer
    x = 517,082.24

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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.