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Finding the Fourth Proportional to 545,251.20, 816,127.20 and 426,278.40

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Solution

The fourth proportional to 545,251.20, 816,127.20 and 426,278.40 is: 638,049.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,251.20 : 816,127.20 = 426,278.40 : x
  2. Step 2: Convert to fraction form
    545,251.20/816,127.20 = 426,278.40/x
  3. Step 3: Cross multiply
    545,251.20x = 816,127.20 × 426,278.40
  4. Step 4: Simplify right side
    545,251.20x = 347,897,397,012.48
  5. Step 5: Solve for x
    x = 347,897,397,012.48/545,251.20
  6. Step 6: Final answer
    x = 638,049.76

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1.5x scale

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.