Home / 812,439.27-1,217,863.48-339,259.95

Finding the Fourth Proportional to 812,439.27, 1,217,863.48 and 339,259.95

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Solution

The fourth proportional to 812,439.27, 1,217,863.48 and 339,259.95 is: 508,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,439.27 : 1,217,863.48 = 339,259.95 : x
  2. Step 2: Convert to fraction form
    812,439.27/1,217,863.48 = 339,259.95/x
  3. Step 3: Cross multiply
    812,439.27x = 1,217,863.48 × 339,259.95
  4. Step 4: Simplify right side
    812,439.27x = 413,172,303,331.63
  5. Step 5: Solve for x
    x = 413,172,303,331.63/812,439.27
  6. Step 6: Final answer
    x = 508,557.77

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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.