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Finding the Fourth Proportional to 631,049.22, 870,849 and 344,563.20

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Solution

The fourth proportional to 631,049.22, 870,849 and 344,563.20 is: 475,497.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,049.22 : 870,849 = 344,563.20 : x
  2. Step 2: Convert to fraction form
    631,049.22/870,849 = 344,563.20/x
  3. Step 3: Cross multiply
    631,049.22x = 870,849 × 344,563.20
  4. Step 4: Simplify right side
    631,049.22x = 300,062,518,156.80
  5. Step 5: Solve for x
    x = 300,062,518,156.80/631,049.22
  6. Step 6: Final answer
    x = 475,497.80

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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.