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Finding the Fourth Proportional to 667,778.80, 1,001,670 and 194,475.76

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Solution

The fourth proportional to 667,778.80, 1,001,670 and 194,475.76 is: 291,714.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,778.80 : 1,001,670 = 194,475.76 : x
  2. Step 2: Convert to fraction form
    667,778.80/1,001,670 = 194,475.76/x
  3. Step 3: Cross multiply
    667,778.80x = 1,001,670 × 194,475.76
  4. Step 4: Simplify right side
    667,778.80x = 194,800,534,519.20
  5. Step 5: Solve for x
    x = 194,800,534,519.20/667,778.80
  6. Step 6: Final answer
    x = 291,714.16

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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.