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Finding the Fourth Proportional to 520,213.01, 717,871.88 and 326,721.83

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Solution

The fourth proportional to 520,213.01, 717,871.88 and 326,721.83 is: 450,862.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,213.01 : 717,871.88 = 326,721.83 : x
  2. Step 2: Convert to fraction form
    520,213.01/717,871.88 = 326,721.83/x
  3. Step 3: Cross multiply
    520,213.01x = 717,871.88 × 326,721.83
  4. Step 4: Simplify right side
    520,213.01x = 234,544,411,566.59
  5. Step 5: Solve for x
    x = 234,544,411,566.59/520,213.01
  6. Step 6: Final answer
    x = 450,862.26

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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.