Home / 827,149.20-1,240,723.80-328,513.20

Finding the Fourth Proportional to 827,149.20, 1,240,723.80 and 328,513.20

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Solution

The fourth proportional to 827,149.20, 1,240,723.80 and 328,513.20 is: 492,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,149.20 : 1,240,723.80 = 328,513.20 : x
  2. Step 2: Convert to fraction form
    827,149.20/1,240,723.80 = 328,513.20/x
  3. Step 3: Cross multiply
    827,149.20x = 1,240,723.80 × 328,513.20
  4. Step 4: Simplify right side
    827,149.20x = 407,594,145,854.16
  5. Step 5: Solve for x
    x = 407,594,145,854.16/827,149.20
  6. Step 6: Final answer
    x = 492,769.80

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Double scale
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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.