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Finding the Fourth Proportional to 612,781.44, 845,620.48 and 371,207.04

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Solution

The fourth proportional to 612,781.44, 845,620.48 and 371,207.04 is: 512,254.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,781.44 : 845,620.48 = 371,207.04 : x
  2. Step 2: Convert to fraction form
    612,781.44/845,620.48 = 371,207.04/x
  3. Step 3: Cross multiply
    612,781.44x = 845,620.48 × 371,207.04
  4. Step 4: Simplify right side
    612,781.44x = 313,900,275,344.18
  5. Step 5: Solve for x
    x = 313,900,275,344.18/612,781.44
  6. Step 6: Final answer
    x = 512,254.87

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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.