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Finding the Fourth Proportional to 545,253.71, 752,520.78 and 312,771.29

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Solution

The fourth proportional to 545,253.71, 752,520.78 and 312,771.29 is: 431,664.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,253.71 : 752,520.78 = 312,771.29 : x
  2. Step 2: Convert to fraction form
    545,253.71/752,520.78 = 312,771.29/x
  3. Step 3: Cross multiply
    545,253.71x = 752,520.78 × 312,771.29
  4. Step 4: Simplify right side
    545,253.71x = 235,366,891,349.80
  5. Step 5: Solve for x
    x = 235,366,891,349.80/545,253.71
  6. Step 6: Final answer
    x = 431,664.91

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1.5x scale

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.