Home / 1,278,929,377.28-1,764,734,687.52-714,344,706.56

Finding the Fourth Proportional to 1,278,929,377.28, 1,764,734,687.52 and 714,344,706.56

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Solution

The fourth proportional to 1,278,929,377.28, 1,764,734,687.52 and 714,344,706.56 is: 985,690,769.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,929,377.28 : 1,764,734,687.52 = 714,344,706.56 : x
  2. Step 2: Convert to fraction form
    1,278,929,377.28/1,764,734,687.52 = 714,344,706.56/x
  3. Step 3: Cross multiply
    1,278,929,377.28x = 1,764,734,687.52 × 714,344,706.56
  4. Step 4: Simplify right side
    1,278,929,377.28x = 1,260,628,882,512,727,552
  5. Step 5: Solve for x
    x = 1,260,628,882,512,727,552/1,278,929,377.28
  6. Step 6: Final answer
    x = 985,690,769.88

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.