Home / 721,855.12-1,082,344.22-361,607.01

Finding the Fourth Proportional to 721,855.12, 1,082,344.22 and 361,607.01

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Solution

The fourth proportional to 721,855.12, 1,082,344.22 and 361,607.01 is: 542,190.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,855.12 : 1,082,344.22 = 361,607.01 : x
  2. Step 2: Convert to fraction form
    721,855.12/1,082,344.22 = 361,607.01/x
  3. Step 3: Cross multiply
    721,855.12x = 1,082,344.22 × 361,607.01
  4. Step 4: Simplify right side
    721,855.12x = 391,383,255,376.95
  5. Step 5: Solve for x
    x = 391,383,255,376.95/721,855.12
  6. Step 6: Final answer
    x = 542,190.87

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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.