Home / 711,680.40-1,067,520.60-680,965.20

Finding the Fourth Proportional to 711,680.40, 1,067,520.60 and 680,965.20

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Solution

The fourth proportional to 711,680.40, 1,067,520.60 and 680,965.20 is: 1,021,447.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,680.40 : 1,067,520.60 = 680,965.20 : x
  2. Step 2: Convert to fraction form
    711,680.40/1,067,520.60 = 680,965.20/x
  3. Step 3: Cross multiply
    711,680.40x = 1,067,520.60 × 680,965.20
  4. Step 4: Simplify right side
    711,680.40x = 726,944,378,883.12
  5. Step 5: Solve for x
    x = 726,944,378,883.12/711,680.40
  6. Step 6: Final answer
    x = 1,021,447.80

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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.