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Finding the Fourth Proportional to 539,604.17, 744,677.85 and 310,235.86

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Solution

The fourth proportional to 539,604.17, 744,677.85 and 310,235.86 is: 428,139.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,604.17 : 744,677.85 = 310,235.86 : x
  2. Step 2: Convert to fraction form
    539,604.17/744,677.85 = 310,235.86/x
  3. Step 3: Cross multiply
    539,604.17x = 744,677.85 × 310,235.86
  4. Step 4: Simplify right side
    539,604.17x = 231,025,773,217.70
  5. Step 5: Solve for x
    x = 231,025,773,217.70/539,604.17
  6. Step 6: Final answer
    x = 428,139.34

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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.