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Finding the Fourth Proportional to 826,465.60, 1,239,698.40 and 820,244.80

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Solution

The fourth proportional to 826,465.60, 1,239,698.40 and 820,244.80 is: 1,230,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,465.60 : 1,239,698.40 = 820,244.80 : x
  2. Step 2: Convert to fraction form
    826,465.60/1,239,698.40 = 820,244.80/x
  3. Step 3: Cross multiply
    826,465.60x = 1,239,698.40 × 820,244.80
  4. Step 4: Simplify right side
    826,465.60x = 1,016,856,166,168.32
  5. Step 5: Solve for x
    x = 1,016,856,166,168.32/826,465.60
  6. Step 6: Final answer
    x = 1,230,367.20

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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.