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Finding the Fourth Proportional to 827,709.80, 1,240,908.60 and 453,732.80

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Solution

The fourth proportional to 827,709.80, 1,240,908.60 and 453,732.80 is: 680,239.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,709.80 : 1,240,908.60 = 453,732.80 : x
  2. Step 2: Convert to fraction form
    827,709.80/1,240,908.60 = 453,732.80/x
  3. Step 3: Cross multiply
    827,709.80x = 1,240,908.60 × 453,732.80
  4. Step 4: Simplify right side
    827,709.80x = 563,040,933,622.08
  5. Step 5: Solve for x
    x = 563,040,933,622.08/827,709.80
  6. Step 6: Final answer
    x = 680,239.54

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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.