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Finding the Fourth Proportional to 646,231.97, 891,665.03 and 374,283.61

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Solution

The fourth proportional to 646,231.97, 891,665.03 and 374,283.61 is: 516,433.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,231.97 : 891,665.03 = 374,283.61 : x
  2. Step 2: Convert to fraction form
    646,231.97/891,665.03 = 374,283.61/x
  3. Step 3: Cross multiply
    646,231.97x = 891,665.03 × 374,283.61
  4. Step 4: Simplify right side
    646,231.97x = 333,735,605,045.71
  5. Step 5: Solve for x
    x = 333,735,605,045.71/646,231.97
  6. Step 6: Final answer
    x = 516,433.14

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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.