Home / 870,940,856.40-1,304,619,694.20-440,361,963.60

Finding the Fourth Proportional to 870,940,856.40, 1,304,619,694.20 and 440,361,963.60

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Solution

The fourth proportional to 870,940,856.40, 1,304,619,694.20 and 440,361,963.60 is: 659,637,087.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,940,856.40 : 1,304,619,694.20 = 440,361,963.60 : x
  2. Step 2: Convert to fraction form
    870,940,856.40/1,304,619,694.20 = 440,361,963.60/x
  3. Step 3: Cross multiply
    870,940,856.40x = 1,304,619,694.20 × 440,361,963.60
  4. Step 4: Simplify right side
    870,940,856.40x = 574,504,890,289,143,552
  5. Step 5: Solve for x
    x = 574,504,890,289,143,552/870,940,856.40
  6. Step 6: Final answer
    x = 659,637,087.95

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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.