Home / 435,972.66-653,958.12-120,428.64

Finding the Fourth Proportional to 435,972.66, 653,958.12 and 120,428.64

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Solution

The fourth proportional to 435,972.66, 653,958.12 and 120,428.64 is: 180,642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,972.66 : 653,958.12 = 120,428.64 : x
  2. Step 2: Convert to fraction form
    435,972.66/653,958.12 = 120,428.64/x
  3. Step 3: Cross multiply
    435,972.66x = 653,958.12 × 120,428.64
  4. Step 4: Simplify right side
    435,972.66x = 78,755,287,008.56
  5. Step 5: Solve for x
    x = 78,755,287,008.56/435,972.66
  6. Step 6: Final answer
    x = 180,642.72

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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.