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Finding the Fourth Proportional to 477,617.72, 716,543.62 and 392,372.64

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Solution

The fourth proportional to 477,617.72, 716,543.62 and 392,372.64 is: 588,655.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,617.72 : 716,543.62 = 392,372.64 : x
  2. Step 2: Convert to fraction form
    477,617.72/716,543.62 = 392,372.64/x
  3. Step 3: Cross multiply
    477,617.72x = 716,543.62 × 392,372.64
  4. Step 4: Simplify right side
    477,617.72x = 281,152,111,854.56
  5. Step 5: Solve for x
    x = 281,152,111,854.56/477,617.72
  6. Step 6: Final answer
    x = 588,655.11

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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.