Home / 812,441.28-1,217,866.48-339,261.96

Finding the Fourth Proportional to 812,441.28, 1,217,866.48 and 339,261.96

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Solution

The fourth proportional to 812,441.28, 1,217,866.48 and 339,261.96 is: 508,560.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,441.28 : 1,217,866.48 = 339,261.96 : x
  2. Step 2: Convert to fraction form
    812,441.28/1,217,866.48 = 339,261.96/x
  3. Step 3: Cross multiply
    812,441.28x = 1,217,866.48 × 339,261.96
  4. Step 4: Simplify right side
    812,441.28x = 413,175,769,023.10
  5. Step 5: Solve for x
    x = 413,175,769,023.10/812,441.28
  6. Step 6: Final answer
    x = 508,560.78

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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.