Home / 812,438.27-1,217,861.99-339,258.95

Finding the Fourth Proportional to 812,438.27, 1,217,861.99 and 339,258.95

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Solution

The fourth proportional to 812,438.27, 1,217,861.99 and 339,258.95 is: 508,556.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,438.27 : 1,217,861.99 = 339,258.95 : x
  2. Step 2: Convert to fraction form
    812,438.27/1,217,861.99 = 339,258.95/x
  3. Step 3: Cross multiply
    812,438.27x = 1,217,861.99 × 339,258.95
  4. Step 4: Simplify right side
    812,438.27x = 413,170,578,276.02
  5. Step 5: Solve for x
    x = 413,170,578,276.02/812,438.27
  6. Step 6: Final answer
    x = 508,556.27

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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.