Home / 728,713.35-1,091,593.80-412,801.20

Finding the Fourth Proportional to 728,713.35, 1,091,593.80 and 412,801.20

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Solution

The fourth proportional to 728,713.35, 1,091,593.80 and 412,801.20 is: 618,365.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,713.35 : 1,091,593.80 = 412,801.20 : x
  2. Step 2: Convert to fraction form
    728,713.35/1,091,593.80 = 412,801.20/x
  3. Step 3: Cross multiply
    728,713.35x = 1,091,593.80 × 412,801.20
  4. Step 4: Simplify right side
    728,713.35x = 450,611,230,552.56
  5. Step 5: Solve for x
    x = 450,611,230,552.56/728,713.35
  6. Step 6: Final answer
    x = 618,365.55

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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.