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Finding the Fourth Proportional to 486,727.72, 730,278.51 and 342,771.69

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Solution

The fourth proportional to 486,727.72, 730,278.51 and 342,771.69 is: 514,289.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,727.72 : 730,278.51 = 342,771.69 : x
  2. Step 2: Convert to fraction form
    486,727.72/730,278.51 = 342,771.69/x
  3. Step 3: Cross multiply
    486,727.72x = 730,278.51 × 342,771.69
  4. Step 4: Simplify right side
    486,727.72x = 250,318,799,043.38
  5. Step 5: Solve for x
    x = 250,318,799,043.38/486,727.72
  6. Step 6: Final answer
    x = 514,289.18

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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.