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Finding the Fourth Proportional to 543,806.20, 815,709.30 and 543,806.20

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Solution

The fourth proportional to 543,806.20, 815,709.30 and 543,806.20 is: 815,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,806.20 : 815,709.30 = 543,806.20 : x
  2. Step 2: Convert to fraction form
    543,806.20/815,709.30 = 543,806.20/x
  3. Step 3: Cross multiply
    543,806.20x = 815,709.30 × 543,806.20
  4. Step 4: Simplify right side
    543,806.20x = 443,587,774,737.66
  5. Step 5: Solve for x
    x = 443,587,774,737.66/543,806.20
  6. Step 6: Final answer
    x = 815,709.30

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Similar ratio
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1.5x scale

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.