Home / 650,815.05-898,098.53-378,890.76

Finding the Fourth Proportional to 650,815.05, 898,098.53 and 378,890.76

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Solution

The fourth proportional to 650,815.05, 898,098.53 and 378,890.76 is: 522,853.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,815.05 : 898,098.53 = 378,890.76 : x
  2. Step 2: Convert to fraction form
    650,815.05/898,098.53 = 378,890.76/x
  3. Step 3: Cross multiply
    650,815.05x = 898,098.53 × 378,890.76
  4. Step 4: Simplify right side
    650,815.05x = 340,281,232,692.13
  5. Step 5: Solve for x
    x = 340,281,232,692.13/650,815.05
  6. Step 6: Final answer
    x = 522,853.97

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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.