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Finding the Fourth Proportional to 520,963.67, 719,041.52 and 339,351.55

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Solution

The fourth proportional to 520,963.67, 719,041.52 and 339,351.55 is: 468,377.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,963.67 : 719,041.52 = 339,351.55 : x
  2. Step 2: Convert to fraction form
    520,963.67/719,041.52 = 339,351.55/x
  3. Step 3: Cross multiply
    520,963.67x = 719,041.52 × 339,351.55
  4. Step 4: Simplify right side
    520,963.67x = 244,007,853,377.13
  5. Step 5: Solve for x
    x = 244,007,853,377.13/520,963.67
  6. Step 6: Final answer
    x = 468,377.87

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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.