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Finding the Fourth Proportional to 543,776.20, 815,664.30 and 543,776.20

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Solution

The fourth proportional to 543,776.20, 815,664.30 and 543,776.20 is: 815,664.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,776.20 : 815,664.30 = 543,776.20 : x
  2. Step 2: Convert to fraction form
    543,776.20/815,664.30 = 543,776.20/x
  3. Step 3: Cross multiply
    543,776.20x = 815,664.30 × 543,776.20
  4. Step 4: Simplify right side
    543,776.20x = 443,538,833,529.66
  5. Step 5: Solve for x
    x = 443,538,833,529.66/543,776.20
  6. Step 6: Final answer
    x = 815,664.30

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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.