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Finding the Fourth Proportional to 659,670.30, 989,505.45 and 491,708.70

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Solution

The fourth proportional to 659,670.30, 989,505.45 and 491,708.70 is: 737,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,670.30 : 989,505.45 = 491,708.70 : x
  2. Step 2: Convert to fraction form
    659,670.30/989,505.45 = 491,708.70/x
  3. Step 3: Cross multiply
    659,670.30x = 989,505.45 × 491,708.70
  4. Step 4: Simplify right side
    659,670.30x = 486,548,438,462.42
  5. Step 5: Solve for x
    x = 486,548,438,462.42/659,670.30
  6. Step 6: Final answer
    x = 737,563.05

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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.