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Finding the Fourth Proportional to 515,000.20, 773,375.10 and 382,030.60

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Solution

The fourth proportional to 515,000.20, 773,375.10 and 382,030.60 is: 573,694.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,000.20 : 773,375.10 = 382,030.60 : x
  2. Step 2: Convert to fraction form
    515,000.20/773,375.10 = 382,030.60/x
  3. Step 3: Cross multiply
    515,000.20x = 773,375.10 × 382,030.60
  4. Step 4: Simplify right side
    515,000.20x = 295,452,953,478.06
  5. Step 5: Solve for x
    x = 295,452,953,478.06/515,000.20
  6. Step 6: Final answer
    x = 573,694.83

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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.