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Finding the Fourth Proportional to 827,011.80, 1,239,861.60 and 453,034.80

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Solution

The fourth proportional to 827,011.80, 1,239,861.60 and 453,034.80 is: 679,192.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,011.80 : 1,239,861.60 = 453,034.80 : x
  2. Step 2: Convert to fraction form
    827,011.80/1,239,861.60 = 453,034.80/x
  3. Step 3: Cross multiply
    827,011.80x = 1,239,861.60 × 453,034.80
  4. Step 4: Simplify right side
    827,011.80x = 561,700,451,983.68
  5. Step 5: Solve for x
    x = 561,700,451,983.68/827,011.80
  6. Step 6: Final answer
    x = 679,192.79

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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.