Home / 728,486.33-1,092,729.56-391,685.63

Finding the Fourth Proportional to 728,486.33, 1,092,729.56 and 391,685.63

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Solution

The fourth proportional to 728,486.33, 1,092,729.56 and 391,685.63 is: 587,528.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,486.33 : 1,092,729.56 = 391,685.63 : x
  2. Step 2: Convert to fraction form
    728,486.33/1,092,729.56 = 391,685.63/x
  3. Step 3: Cross multiply
    728,486.33x = 1,092,729.56 × 391,685.63
  4. Step 4: Simplify right side
    728,486.33x = 428,006,458,706.15
  5. Step 5: Solve for x
    x = 428,006,458,706.15/728,486.33
  6. Step 6: Final answer
    x = 587,528.47

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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.