Home / 665,971.10-998,557.09-305,691.22

Finding the Fourth Proportional to 665,971.10, 998,557.09 and 305,691.22

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Solution

The fourth proportional to 665,971.10, 998,557.09 and 305,691.22 is: 458,353.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,971.10 : 998,557.09 = 305,691.22 : x
  2. Step 2: Convert to fraction form
    665,971.10/998,557.09 = 305,691.22/x
  3. Step 3: Cross multiply
    665,971.10x = 998,557.09 × 305,691.22
  4. Step 4: Simplify right side
    665,971.10x = 305,250,129,948.84
  5. Step 5: Solve for x
    x = 305,250,129,948.84/665,971.10
  6. Step 6: Final answer
    x = 458,353.42

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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.