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Finding the Fourth Proportional to 547,132.80, 819,316.80 and 436,540.80

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Solution

The fourth proportional to 547,132.80, 819,316.80 and 436,540.80 is: 653,708.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,132.80 : 819,316.80 = 436,540.80 : x
  2. Step 2: Convert to fraction form
    547,132.80/819,316.80 = 436,540.80/x
  3. Step 3: Cross multiply
    547,132.80x = 819,316.80 × 436,540.80
  4. Step 4: Simplify right side
    547,132.80x = 357,665,211,325.44
  5. Step 5: Solve for x
    x = 357,665,211,325.44/547,132.80
  6. Step 6: Final answer
    x = 653,708.22

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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.