Home / 1,189,867,635.52-1,640,286,747.68-831,522,849.76

Finding the Fourth Proportional to 1,189,867,635.52, 1,640,286,747.68 and 831,522,849.76

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Solution

The fourth proportional to 1,189,867,635.52, 1,640,286,747.68 and 831,522,849.76 is: 1,146,292,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,867,635.52 : 1,640,286,747.68 = 831,522,849.76 : x
  2. Step 2: Convert to fraction form
    1,189,867,635.52/1,640,286,747.68 = 831,522,849.76/x
  3. Step 3: Cross multiply
    1,189,867,635.52x = 1,640,286,747.68 × 831,522,849.76
  4. Step 4: Simplify right side
    1,189,867,635.52x = 1,363,935,910,854,435,584
  5. Step 5: Solve for x
    x = 1,363,935,910,854,435,584/1,189,867,635.52
  6. Step 6: Final answer
    x = 1,146,292,133.80

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Double scale
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1.5x scale

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.