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Finding the Fourth Proportional to 539,393,773.80, 809,468,574.30 and 345,776,039.40

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Solution

The fourth proportional to 539,393,773.80, 809,468,574.30 and 345,776,039.40 is: 518,906,318.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,393,773.80 : 809,468,574.30 = 345,776,039.40 : x
  2. Step 2: Convert to fraction form
    539,393,773.80/809,468,574.30 = 345,776,039.40/x
  3. Step 3: Cross multiply
    539,393,773.80x = 809,468,574.30 × 345,776,039.40
  4. Step 4: Simplify right side
    539,393,773.80x = 279,894,837,640,218,592
  5. Step 5: Solve for x
    x = 279,894,837,640,218,592/539,393,773.80
  6. Step 6: Final answer
    x = 518,906,318.97

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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.