Home / 826,400.80-1,239,601.20-686,432.80

Finding the Fourth Proportional to 826,400.80, 1,239,601.20 and 686,432.80

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Solution

The fourth proportional to 826,400.80, 1,239,601.20 and 686,432.80 is: 1,029,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,400.80 : 1,239,601.20 = 686,432.80 : x
  2. Step 2: Convert to fraction form
    826,400.80/1,239,601.20 = 686,432.80/x
  3. Step 3: Cross multiply
    826,400.80x = 1,239,601.20 × 686,432.80
  4. Step 4: Simplify right side
    826,400.80x = 850,902,922,599.36
  5. Step 5: Solve for x
    x = 850,902,922,599.36/826,400.80
  6. Step 6: Final answer
    x = 1,029,649.20

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Similar ratio
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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.