Home / 743,434.26-1,025,990-421,147

Finding the Fourth Proportional to 743,434.26, 1,025,990 and 421,147

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Solution

The fourth proportional to 743,434.26, 1,025,990 and 421,147 is: 581,211.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,434.26 : 1,025,990 = 421,147 : x
  2. Step 2: Convert to fraction form
    743,434.26/1,025,990 = 421,147/x
  3. Step 3: Cross multiply
    743,434.26x = 1,025,990 × 421,147
  4. Step 4: Simplify right side
    743,434.26x = 432,092,610,530
  5. Step 5: Solve for x
    x = 432,092,610,530/743,434.26
  6. Step 6: Final answer
    x = 581,211.59

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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.