Home / 1,215,838,617.45-1,678,680,928.04-770,197,447.41

Finding the Fourth Proportional to 1,215,838,617.45, 1,678,680,928.04 and 770,197,447.41

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Solution

The fourth proportional to 1,215,838,617.45, 1,678,680,928.04 and 770,197,447.41 is: 1,063,394,226.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,838,617.45 : 1,678,680,928.04 = 770,197,447.41 : x
  2. Step 2: Convert to fraction form
    1,215,838,617.45/1,678,680,928.04 = 770,197,447.41/x
  3. Step 3: Cross multiply
    1,215,838,617.45x = 1,678,680,928.04 × 770,197,447.41
  4. Step 4: Simplify right side
    1,215,838,617.45x = 1,292,915,765,792,257,792
  5. Step 5: Solve for x
    x = 1,292,915,765,792,257,792/1,215,838,617.45
  6. Step 6: Final answer
    x = 1,063,394,226.20

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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.