Home / 721,863.76-1,084,758.50-385,142.30

Finding the Fourth Proportional to 721,863.76, 1,084,758.50 and 385,142.30

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Solution

The fourth proportional to 721,863.76, 1,084,758.50 and 385,142.30 is: 578,760.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,863.76 : 1,084,758.50 = 385,142.30 : x
  2. Step 2: Convert to fraction form
    721,863.76/1,084,758.50 = 385,142.30/x
  3. Step 3: Cross multiply
    721,863.76x = 1,084,758.50 × 385,142.30
  4. Step 4: Simplify right side
    721,863.76x = 417,786,383,634.55
  5. Step 5: Solve for x
    x = 417,786,383,634.55/721,863.76
  6. Step 6: Final answer
    x = 578,760.71

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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.