Home / 817,346.80-1,226,020.20-439,433.20

Finding the Fourth Proportional to 817,346.80, 1,226,020.20 and 439,433.20

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Solution

The fourth proportional to 817,346.80, 1,226,020.20 and 439,433.20 is: 659,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,346.80 : 1,226,020.20 = 439,433.20 : x
  2. Step 2: Convert to fraction form
    817,346.80/1,226,020.20 = 439,433.20/x
  3. Step 3: Cross multiply
    817,346.80x = 1,226,020.20 × 439,433.20
  4. Step 4: Simplify right side
    817,346.80x = 538,753,979,750.64
  5. Step 5: Solve for x
    x = 538,753,979,750.64/817,346.80
  6. Step 6: Final answer
    x = 659,149.80

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Double scale
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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.