Home / 1,278,288,046.80-1,917,432,070.20-1,228,123,515.60

Finding the Fourth Proportional to 1,278,288,046.80, 1,917,432,070.20 and 1,228,123,515.60

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Solution

The fourth proportional to 1,278,288,046.80, 1,917,432,070.20 and 1,228,123,515.60 is: 1,842,185,273.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,288,046.80 : 1,917,432,070.20 = 1,228,123,515.60 : x
  2. Step 2: Convert to fraction form
    1,278,288,046.80/1,917,432,070.20 = 1,228,123,515.60/x
  3. Step 3: Cross multiply
    1,278,288,046.80x = 1,917,432,070.20 × 1,228,123,515.60
  4. Step 4: Simplify right side
    1,278,288,046.80x = 2,354,843,414,978,209,792
  5. Step 5: Solve for x
    x = 2,354,843,414,978,209,792/1,278,288,046.80
  6. Step 6: Final answer
    x = 1,842,185,273.40

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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.