Home / 499,246.20-748,869.30-420,222.60

Finding the Fourth Proportional to 499,246.20, 748,869.30 and 420,222.60

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Solution

The fourth proportional to 499,246.20, 748,869.30 and 420,222.60 is: 630,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,246.20 : 748,869.30 = 420,222.60 : x
  2. Step 2: Convert to fraction form
    499,246.20/748,869.30 = 420,222.60/x
  3. Step 3: Cross multiply
    499,246.20x = 748,869.30 × 420,222.60
  4. Step 4: Simplify right side
    499,246.20x = 314,691,804,306.18
  5. Step 5: Solve for x
    x = 314,691,804,306.18/499,246.20
  6. Step 6: Final answer
    x = 630,333.90

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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.