Home / 786,306.88-1,085,100.96-428,610.88

Finding the Fourth Proportional to 786,306.88, 1,085,100.96 and 428,610.88

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Solution

The fourth proportional to 786,306.88, 1,085,100.96 and 428,610.88 is: 591,481.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,306.88 : 1,085,100.96 = 428,610.88 : x
  2. Step 2: Convert to fraction form
    786,306.88/1,085,100.96 = 428,610.88/x
  3. Step 3: Cross multiply
    786,306.88x = 1,085,100.96 × 428,610.88
  4. Step 4: Simplify right side
    786,306.88x = 465,086,077,354.45
  5. Step 5: Solve for x
    x = 465,086,077,354.45/786,306.88
  6. Step 6: Final answer
    x = 591,481.63

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1.5x scale

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.