Home / 771,708.38-1,157,317.34-721,333.09

Finding the Fourth Proportional to 771,708.38, 1,157,317.34 and 721,333.09

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Solution

The fourth proportional to 771,708.38, 1,157,317.34 and 721,333.09 is: 1,081,770.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,708.38 : 1,157,317.34 = 721,333.09 : x
  2. Step 2: Convert to fraction form
    771,708.38/1,157,317.34 = 721,333.09/x
  3. Step 3: Cross multiply
    771,708.38x = 1,157,317.34 × 721,333.09
  4. Step 4: Simplify right side
    771,708.38x = 834,811,286,472.82
  5. Step 5: Solve for x
    x = 834,811,286,472.82/771,708.38
  6. Step 6: Final answer
    x = 1,081,770.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.