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Finding the Fourth Proportional to 826,080.80, 1,239,121.20 and 826,080.80

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Solution

The fourth proportional to 826,080.80, 1,239,121.20 and 826,080.80 is: 1,239,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,080.80 : 1,239,121.20 = 826,080.80 : x
  2. Step 2: Convert to fraction form
    826,080.80/1,239,121.20 = 826,080.80/x
  3. Step 3: Cross multiply
    826,080.80x = 1,239,121.20 × 826,080.80
  4. Step 4: Simplify right side
    826,080.80x = 1,023,614,232,192.96
  5. Step 5: Solve for x
    x = 1,023,614,232,192.96/826,080.80
  6. Step 6: Final answer
    x = 1,239,121.20

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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.