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Finding the Fourth Proportional to 667,282.80, 1,000,978.88 and 193,967.68

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Solution

The fourth proportional to 667,282.80, 1,000,978.88 and 193,967.68 is: 290,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,282.80 : 1,000,978.88 = 193,967.68 : x
  2. Step 2: Convert to fraction form
    667,282.80/1,000,978.88 = 193,967.68/x
  3. Step 3: Cross multiply
    667,282.80x = 1,000,978.88 × 193,967.68
  4. Step 4: Simplify right side
    667,282.80x = 194,157,551,082.60
  5. Step 5: Solve for x
    x = 194,157,551,082.60/667,282.80
  6. Step 6: Final answer
    x = 290,967.41

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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.