Home / 1,278,278,456.58-1,915,722,609.48-656,468,571.74

Finding the Fourth Proportional to 1,278,278,456.58, 1,915,722,609.48 and 656,468,571.74

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Solution

The fourth proportional to 1,278,278,456.58, 1,915,722,609.48 and 656,468,571.74 is: 983,832,340.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,278,456.58 : 1,915,722,609.48 = 656,468,571.74 : x
  2. Step 2: Convert to fraction form
    1,278,278,456.58/1,915,722,609.48 = 656,468,571.74/x
  3. Step 3: Cross multiply
    1,278,278,456.58x = 1,915,722,609.48 × 656,468,571.74
  4. Step 4: Simplify right side
    1,278,278,456.58x = 1,257,611,685,285,782,784
  5. Step 5: Solve for x
    x = 1,257,611,685,285,782,784/1,278,278,456.58
  6. Step 6: Final answer
    x = 983,832,340.14

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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.