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Finding the Fourth Proportional to 827,458.40, 1,241,479.20 and 798,298.40

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Solution

The fourth proportional to 827,458.40, 1,241,479.20 and 798,298.40 is: 1,197,728.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,458.40 : 1,241,479.20 = 798,298.40 : x
  2. Step 2: Convert to fraction form
    827,458.40/1,241,479.20 = 798,298.40/x
  3. Step 3: Cross multiply
    827,458.40x = 1,241,479.20 × 798,298.40
  4. Step 4: Simplify right side
    827,458.40x = 991,070,858,993.28
  5. Step 5: Solve for x
    x = 991,070,858,993.28/827,458.40
  6. Step 6: Final answer
    x = 1,197,728.92

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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.