Home / 1,272,723.05-1,756,320.82-721,489.87

Finding the Fourth Proportional to 1,272,723.05, 1,756,320.82 and 721,489.87

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Solution

The fourth proportional to 1,272,723.05, 1,756,320.82 and 721,489.87 is: 995,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,723.05 : 1,756,320.82 = 721,489.87 : x
  2. Step 2: Convert to fraction form
    1,272,723.05/1,756,320.82 = 721,489.87/x
  3. Step 3: Cross multiply
    1,272,723.05x = 1,756,320.82 × 721,489.87
  4. Step 4: Simplify right side
    1,272,723.05x = 1,267,167,671,318.49
  5. Step 5: Solve for x
    x = 1,267,167,671,318.49/1,272,723.05
  6. Step 6: Final answer
    x = 995,635.05

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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.