Home / 721,716,730.98-995,969,496.56-391,691,869.98

Finding the Fourth Proportional to 721,716,730.98, 995,969,496.56 and 391,691,869.98

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Solution

The fourth proportional to 721,716,730.98, 995,969,496.56 and 391,691,869.98 is: 540,535,001.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,716,730.98 : 995,969,496.56 = 391,691,869.98 : x
  2. Step 2: Convert to fraction form
    721,716,730.98/995,969,496.56 = 391,691,869.98/x
  3. Step 3: Cross multiply
    721,716,730.98x = 995,969,496.56 × 391,691,869.98
  4. Step 4: Simplify right side
    721,716,730.98x = 390,113,154,548,667,136
  5. Step 5: Solve for x
    x = 390,113,154,548,667,136/721,716,730.98
  6. Step 6: Final answer
    x = 540,535,001.90

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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.