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Finding the Fourth Proportional to 609,022.80, 913,534.20 and 437,780.70

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Solution

The fourth proportional to 609,022.80, 913,534.20 and 437,780.70 is: 656,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,022.80 : 913,534.20 = 437,780.70 : x
  2. Step 2: Convert to fraction form
    609,022.80/913,534.20 = 437,780.70/x
  3. Step 3: Cross multiply
    609,022.80x = 913,534.20 × 437,780.70
  4. Step 4: Simplify right side
    609,022.80x = 399,927,641,549.94
  5. Step 5: Solve for x
    x = 399,927,641,549.94/609,022.80
  6. Step 6: Final answer
    x = 656,671.05

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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.