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Finding the Fourth Proportional to 589,987.52, 814,181.28 and 321,715.52

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Solution

The fourth proportional to 589,987.52, 814,181.28 and 321,715.52 is: 443,966.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,987.52 : 814,181.28 = 321,715.52 : x
  2. Step 2: Convert to fraction form
    589,987.52/814,181.28 = 321,715.52/x
  3. Step 3: Cross multiply
    589,987.52x = 814,181.28 × 321,715.52
  4. Step 4: Simplify right side
    589,987.52x = 261,934,753,869.47
  5. Step 5: Solve for x
    x = 261,934,753,869.47/589,987.52
  6. Step 6: Final answer
    x = 443,966.60

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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.