Home / 888,684,685.13-1,227,209,229.33-665,278,512.64

Finding the Fourth Proportional to 888,684,685.13, 1,227,209,229.33 and 665,278,512.64

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Solution

The fourth proportional to 888,684,685.13, 1,227,209,229.33 and 665,278,512.64 is: 918,701,474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,684,685.13 : 1,227,209,229.33 = 665,278,512.64 : x
  2. Step 2: Convert to fraction form
    888,684,685.13/1,227,209,229.33 = 665,278,512.64/x
  3. Step 3: Cross multiply
    888,684,685.13x = 1,227,209,229.33 × 665,278,512.64
  4. Step 4: Simplify right side
    888,684,685.13x = 816,435,930,781,213,568
  5. Step 5: Solve for x
    x = 816,435,930,781,213,568/888,684,685.13
  6. Step 6: Final answer
    x = 918,701,474.71

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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.