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Finding the Fourth Proportional to 487,819.89, 731,729.84 and 321,569.01

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Solution

The fourth proportional to 487,819.89, 731,729.84 and 321,569.01 is: 482,353.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,819.89 : 731,729.84 = 321,569.01 : x
  2. Step 2: Convert to fraction form
    487,819.89/731,729.84 = 321,569.01/x
  3. Step 3: Cross multiply
    487,819.89x = 731,729.84 × 321,569.01
  4. Step 4: Simplify right side
    487,819.89x = 235,301,638,628.41
  5. Step 5: Solve for x
    x = 235,301,638,628.41/487,819.89
  6. Step 6: Final answer
    x = 482,353.52

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Similar ratio
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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.