Home / 818,829.17-1,228,243.76-319,843.25

Finding the Fourth Proportional to 818,829.17, 1,228,243.76 and 319,843.25

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Solution

The fourth proportional to 818,829.17, 1,228,243.76 and 319,843.25 is: 479,764.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,829.17 : 1,228,243.76 = 319,843.25 : x
  2. Step 2: Convert to fraction form
    818,829.17/1,228,243.76 = 319,843.25/x
  3. Step 3: Cross multiply
    818,829.17x = 1,228,243.76 × 319,843.25
  4. Step 4: Simplify right side
    818,829.17x = 392,845,474,391.40
  5. Step 5: Solve for x
    x = 392,845,474,391.40/818,829.17
  6. Step 6: Final answer
    x = 479,764.88

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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.