Home / 752,478.30-1,128,898.08-279,167.76

Finding the Fourth Proportional to 752,478.30, 1,128,898.08 and 279,167.76

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Solution

The fourth proportional to 752,478.30, 1,128,898.08 and 279,167.76 is: 418,818.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,478.30 : 1,128,898.08 = 279,167.76 : x
  2. Step 2: Convert to fraction form
    752,478.30/1,128,898.08 = 279,167.76/x
  3. Step 3: Cross multiply
    752,478.30x = 1,128,898.08 × 279,167.76
  4. Step 4: Simplify right side
    752,478.30x = 315,151,948,261.90
  5. Step 5: Solve for x
    x = 315,151,948,261.90/752,478.30
  6. Step 6: Final answer
    x = 418,818.65

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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.