Home / 827,129.70-1,240,694.55-328,493.70

Finding the Fourth Proportional to 827,129.70, 1,240,694.55 and 328,493.70

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Solution

The fourth proportional to 827,129.70, 1,240,694.55 and 328,493.70 is: 492,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,129.70 : 1,240,694.55 = 328,493.70 : x
  2. Step 2: Convert to fraction form
    827,129.70/1,240,694.55 = 328,493.70/x
  3. Step 3: Cross multiply
    827,129.70x = 1,240,694.55 × 328,493.70
  4. Step 4: Simplify right side
    827,129.70x = 407,560,343,299.34
  5. Step 5: Solve for x
    x = 407,560,343,299.34/827,129.70
  6. Step 6: Final answer
    x = 492,740.55

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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.