Home / 721,110.12-995,438.37-449,312.30

Finding the Fourth Proportional to 721,110.12, 995,438.37 and 449,312.30

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Solution

The fourth proportional to 721,110.12, 995,438.37 and 449,312.30 is: 620,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,110.12 : 995,438.37 = 449,312.30 : x
  2. Step 2: Convert to fraction form
    721,110.12/995,438.37 = 449,312.30/x
  3. Step 3: Cross multiply
    721,110.12x = 995,438.37 × 449,312.30
  4. Step 4: Simplify right side
    721,110.12x = 447,262,703,532.95
  5. Step 5: Solve for x
    x = 447,262,703,532.95/721,110.12
  6. Step 6: Final answer
    x = 620,241.89

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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.