Home / 721,606,652.44-995,817,180.36-391,581,791.44

Finding the Fourth Proportional to 721,606,652.44, 995,817,180.36 and 391,581,791.44

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Solution

The fourth proportional to 721,606,652.44, 995,817,180.36 and 391,581,791.44 is: 540,382,872.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,606,652.44 : 995,817,180.36 = 391,581,791.44 : x
  2. Step 2: Convert to fraction form
    721,606,652.44/995,817,180.36 = 391,581,791.44/x
  3. Step 3: Cross multiply
    721,606,652.44x = 995,817,180.36 × 391,581,791.44
  4. Step 4: Simplify right side
    721,606,652.44x = 389,943,875,432,098,368
  5. Step 5: Solve for x
    x = 389,943,875,432,098,368/721,606,652.44
  6. Step 6: Final answer
    x = 540,382,872.18

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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.