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Finding the Fourth Proportional to 623,306.40, 935,996.40 and 343,024.80

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Solution

The fourth proportional to 623,306.40, 935,996.40 and 343,024.80 is: 515,107.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,306.40 : 935,996.40 = 343,024.80 : x
  2. Step 2: Convert to fraction form
    623,306.40/935,996.40 = 343,024.80/x
  3. Step 3: Cross multiply
    623,306.40x = 935,996.40 × 343,024.80
  4. Step 4: Simplify right side
    623,306.40x = 321,069,977,910.72
  5. Step 5: Solve for x
    x = 321,069,977,910.72/623,306.40
  6. Step 6: Final answer
    x = 515,107.78

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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.