Home / 721,756,675.16-995,910,442.16-420,391,584.60

Finding the Fourth Proportional to 721,756,675.16, 995,910,442.16 and 420,391,584.60

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Solution

The fourth proportional to 721,756,675.16, 995,910,442.16 and 420,391,584.60 is: 580,074,120.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,756,675.16 : 995,910,442.16 = 420,391,584.60 : x
  2. Step 2: Convert to fraction form
    721,756,675.16/995,910,442.16 = 420,391,584.60/x
  3. Step 3: Cross multiply
    721,756,675.16x = 995,910,442.16 × 420,391,584.60
  4. Step 4: Simplify right side
    721,756,675.16x = 418,672,368,899,329,088
  5. Step 5: Solve for x
    x = 418,672,368,899,329,088/721,756,675.16
  6. Step 6: Final answer
    x = 580,074,120.97

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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.