Home / 499,318.18-747,788.39-318,844.59

Finding the Fourth Proportional to 499,318.18, 747,788.39 and 318,844.59

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Solution

The fourth proportional to 499,318.18, 747,788.39 and 318,844.59 is: 477,507.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,318.18 : 747,788.39 = 318,844.59 : x
  2. Step 2: Convert to fraction form
    499,318.18/747,788.39 = 318,844.59/x
  3. Step 3: Cross multiply
    499,318.18x = 747,788.39 × 318,844.59
  4. Step 4: Simplify right side
    499,318.18x = 238,428,281,022.09
  5. Step 5: Solve for x
    x = 238,428,281,022.09/499,318.18
  6. Step 6: Final answer
    x = 477,507.71

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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.