Home / 1,278,165,700.80-1,917,248,551.20-658,292,918.40

Finding the Fourth Proportional to 1,278,165,700.80, 1,917,248,551.20 and 658,292,918.40

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Solution

The fourth proportional to 1,278,165,700.80, 1,917,248,551.20 and 658,292,918.40 is: 987,439,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,165,700.80 : 1,917,248,551.20 = 658,292,918.40 : x
  2. Step 2: Convert to fraction form
    1,278,165,700.80/1,917,248,551.20 = 658,292,918.40/x
  3. Step 3: Cross multiply
    1,278,165,700.80x = 1,917,248,551.20 × 658,292,918.40
  4. Step 4: Simplify right side
    1,278,165,700.80x = 1,262,111,144,067,619,840
  5. Step 5: Solve for x
    x = 1,262,111,144,067,619,840/1,278,165,700.80
  6. Step 6: Final answer
    x = 987,439,377.60

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Double scale
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Similar ratio
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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.