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Finding the Fourth Proportional to 539,348.40, 807,761.16 and 426,269.70

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Solution

The fourth proportional to 539,348.40, 807,761.16 and 426,269.70 is: 638,407.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,348.40 : 807,761.16 = 426,269.70 : x
  2. Step 2: Convert to fraction form
    539,348.40/807,761.16 = 426,269.70/x
  3. Step 3: Cross multiply
    539,348.40x = 807,761.16 × 426,269.70
  4. Step 4: Simplify right side
    539,348.40x = 344,324,107,344.85
  5. Step 5: Solve for x
    x = 344,324,107,344.85/539,348.40
  6. Step 6: Final answer
    x = 638,407.58

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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.