Home / 765,452.20-1,148,436.40-338,929.78

Finding the Fourth Proportional to 765,452.20, 1,148,436.40 and 338,929.78

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Solution

The fourth proportional to 765,452.20, 1,148,436.40 and 338,929.78 is: 508,508.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,452.20 : 1,148,436.40 = 338,929.78 : x
  2. Step 2: Convert to fraction form
    765,452.20/1,148,436.40 = 338,929.78/x
  3. Step 3: Cross multiply
    765,452.20x = 1,148,436.40 × 338,929.78
  4. Step 4: Simplify right side
    765,452.20x = 389,239,296,395.99
  5. Step 5: Solve for x
    x = 389,239,296,395.99/765,452.20
  6. Step 6: Final answer
    x = 508,508.95

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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.