Home / 726,748.88-1,090,128.18-253,432.40

Finding the Fourth Proportional to 726,748.88, 1,090,128.18 and 253,432.40

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Solution

The fourth proportional to 726,748.88, 1,090,128.18 and 253,432.40 is: 380,150.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,748.88 : 1,090,128.18 = 253,432.40 : x
  2. Step 2: Convert to fraction form
    726,748.88/1,090,128.18 = 253,432.40/x
  3. Step 3: Cross multiply
    726,748.88x = 1,090,128.18 × 253,432.40
  4. Step 4: Simplify right side
    726,748.88x = 276,273,800,965.03
  5. Step 5: Solve for x
    x = 276,273,800,965.03/726,748.88
  6. Step 6: Final answer
    x = 380,150.29

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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.