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Finding the Fourth Proportional to 561,938.70, 842,908.05 and 321,806.10

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Solution

The fourth proportional to 561,938.70, 842,908.05 and 321,806.10 is: 482,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,938.70 : 842,908.05 = 321,806.10 : x
  2. Step 2: Convert to fraction form
    561,938.70/842,908.05 = 321,806.10/x
  3. Step 3: Cross multiply
    561,938.70x = 842,908.05 × 321,806.10
  4. Step 4: Simplify right side
    561,938.70x = 271,252,952,229.11
  5. Step 5: Solve for x
    x = 271,252,952,229.11/561,938.70
  6. Step 6: Final answer
    x = 482,709.15

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Similar ratio
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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.