Home / 812,437.52-1,217,860.86-339,258.20

Finding the Fourth Proportional to 812,437.52, 1,217,860.86 and 339,258.20

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Solution

The fourth proportional to 812,437.52, 1,217,860.86 and 339,258.20 is: 508,555.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,437.52 : 1,217,860.86 = 339,258.20 : x
  2. Step 2: Convert to fraction form
    812,437.52/1,217,860.86 = 339,258.20/x
  3. Step 3: Cross multiply
    812,437.52x = 1,217,860.86 × 339,258.20
  4. Step 4: Simplify right side
    812,437.52x = 413,169,283,214.05
  5. Step 5: Solve for x
    x = 413,169,283,214.05/812,437.52
  6. Step 6: Final answer
    x = 508,555.15

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Double scale
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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.