Home / 812,569.20-1,218,853.80-339,097.20

Finding the Fourth Proportional to 812,569.20, 1,218,853.80 and 339,097.20

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Solution

The fourth proportional to 812,569.20, 1,218,853.80 and 339,097.20 is: 508,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,569.20 : 1,218,853.80 = 339,097.20 : x
  2. Step 2: Convert to fraction form
    812,569.20/1,218,853.80 = 339,097.20/x
  3. Step 3: Cross multiply
    812,569.20x = 1,218,853.80 × 339,097.20
  4. Step 4: Simplify right side
    812,569.20x = 413,309,910,789.36
  5. Step 5: Solve for x
    x = 413,309,910,789.36/812,569.20
  6. Step 6: Final answer
    x = 508,645.80

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1.5x scale

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.