Home / 791,221.41-1,091,886-428,647.79

Finding the Fourth Proportional to 791,221.41, 1,091,886 and 428,647.79

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Solution

The fourth proportional to 791,221.41, 1,091,886 and 428,647.79 is: 591,534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,221.41 : 1,091,886 = 428,647.79 : x
  2. Step 2: Convert to fraction form
    791,221.41/1,091,886 = 428,647.79/x
  3. Step 3: Cross multiply
    791,221.41x = 1,091,886 × 428,647.79
  4. Step 4: Simplify right side
    791,221.41x = 468,034,523,561.66
  5. Step 5: Solve for x
    x = 468,034,523,561.66/791,221.41
  6. Step 6: Final answer
    x = 591,534.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.