Home / 681,721.60-1,022,701.20-282,143.20

Finding the Fourth Proportional to 681,721.60, 1,022,701.20 and 282,143.20

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Solution

The fourth proportional to 681,721.60, 1,022,701.20 and 282,143.20 is: 423,263.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,721.60 : 1,022,701.20 = 282,143.20 : x
  2. Step 2: Convert to fraction form
    681,721.60/1,022,701.20 = 282,143.20/x
  3. Step 3: Cross multiply
    681,721.60x = 1,022,701.20 × 282,143.20
  4. Step 4: Simplify right side
    681,721.60x = 288,548,189,211.84
  5. Step 5: Solve for x
    x = 288,548,189,211.84/681,721.60
  6. Step 6: Final answer
    x = 423,263.97

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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.