Home / 1,278,463,219.80-1,917,694,829.70-865,214,698.20

Finding the Fourth Proportional to 1,278,463,219.80, 1,917,694,829.70 and 865,214,698.20

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Solution

The fourth proportional to 1,278,463,219.80, 1,917,694,829.70 and 865,214,698.20 is: 1,297,822,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,463,219.80 : 1,917,694,829.70 = 865,214,698.20 : x
  2. Step 2: Convert to fraction form
    1,278,463,219.80/1,917,694,829.70 = 865,214,698.20/x
  3. Step 3: Cross multiply
    1,278,463,219.80x = 1,917,694,829.70 × 865,214,698.20
  4. Step 4: Simplify right side
    1,278,463,219.80x = 1,659,217,753,318,586,112
  5. Step 5: Solve for x
    x = 1,659,217,753,318,586,112/1,278,463,219.80
  6. Step 6: Final answer
    x = 1,297,822,047.30

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Double scale
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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.