Home / 1,217,960,643.67-1,680,497,612.39-689,324,629.55

Finding the Fourth Proportional to 1,217,960,643.67, 1,680,497,612.39 and 689,324,629.55

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Solution

The fourth proportional to 1,217,960,643.67, 1,680,497,612.39 and 689,324,629.55 is: 951,104,947.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,960,643.67 : 1,680,497,612.39 = 689,324,629.55 : x
  2. Step 2: Convert to fraction form
    1,217,960,643.67/1,680,497,612.39 = 689,324,629.55/x
  3. Step 3: Cross multiply
    1,217,960,643.67x = 1,680,497,612.39 × 689,324,629.55
  4. Step 4: Simplify right side
    1,217,960,643.67x = 1,158,408,394,120,396,288
  5. Step 5: Solve for x
    x = 1,158,408,394,120,396,288/1,217,960,643.67
  6. Step 6: Final answer
    x = 951,104,947.56

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Double scale
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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.