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Finding the Fourth Proportional to 520,694.31, 717,273.78 and 443,963.42

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Solution

The fourth proportional to 520,694.31, 717,273.78 and 443,963.42 is: 611,574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,694.31 : 717,273.78 = 443,963.42 : x
  2. Step 2: Convert to fraction form
    520,694.31/717,273.78 = 443,963.42/x
  3. Step 3: Cross multiply
    520,694.31x = 717,273.78 × 443,963.42
  4. Step 4: Simplify right side
    520,694.31x = 318,443,316,858.76
  5. Step 5: Solve for x
    x = 318,443,316,858.76/520,694.31
  6. Step 6: Final answer
    x = 611,574.41

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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.