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Finding the Fourth Proportional to 487,823.89, 731,735.84 and 321,573.01

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Solution

The fourth proportional to 487,823.89, 731,735.84 and 321,573.01 is: 482,359.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,823.89 : 731,735.84 = 321,573.01 : x
  2. Step 2: Convert to fraction form
    487,823.89/731,735.84 = 321,573.01/x
  3. Step 3: Cross multiply
    487,823.89x = 731,735.84 × 321,573.01
  4. Step 4: Simplify right side
    487,823.89x = 235,306,494,985.81
  5. Step 5: Solve for x
    x = 235,306,494,985.81/487,823.89
  6. Step 6: Final answer
    x = 482,359.52

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Similar ratio
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1.5x scale

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.