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Finding the Fourth Proportional to 661,257.20, 989,812.20 and 474,633.20

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Solution

The fourth proportional to 661,257.20, 989,812.20 and 474,633.20 is: 710,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,257.20 : 989,812.20 = 474,633.20 : x
  2. Step 2: Convert to fraction form
    661,257.20/989,812.20 = 474,633.20/x
  3. Step 3: Cross multiply
    661,257.20x = 989,812.20 × 474,633.20
  4. Step 4: Simplify right side
    661,257.20x = 469,797,731,885.04
  5. Step 5: Solve for x
    x = 469,797,731,885.04/661,257.20
  6. Step 6: Final answer
    x = 710,461.42

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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.