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Finding the Fourth Proportional to 826,807.80, 1,239,920.10 and 294,346.20

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Solution

The fourth proportional to 826,807.80, 1,239,920.10 and 294,346.20 is: 441,415.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,807.80 : 1,239,920.10 = 294,346.20 : x
  2. Step 2: Convert to fraction form
    826,807.80/1,239,920.10 = 294,346.20/x
  3. Step 3: Cross multiply
    826,807.80x = 1,239,920.10 × 294,346.20
  4. Step 4: Simplify right side
    826,807.80x = 364,965,769,738.62
  5. Step 5: Solve for x
    x = 364,965,769,738.62/826,807.80
  6. Step 6: Final answer
    x = 441,415.49

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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.