Home / 1,117,631.28-1,676,462.30-318,912.57

Finding the Fourth Proportional to 1,117,631.28, 1,676,462.30 and 318,912.57

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Solution

The fourth proportional to 1,117,631.28, 1,676,462.30 and 318,912.57 is: 478,373.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117,631.28 : 1,676,462.30 = 318,912.57 : x
  2. Step 2: Convert to fraction form
    1,117,631.28/1,676,462.30 = 318,912.57/x
  3. Step 3: Cross multiply
    1,117,631.28x = 1,676,462.30 × 318,912.57
  4. Step 4: Simplify right side
    1,117,631.28x = 534,644,890,624.24
  5. Step 5: Solve for x
    x = 534,644,890,624.24/1,117,631.28
  6. Step 6: Final answer
    x = 478,373.23

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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.