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Finding the Fourth Proportional to 650,999.25, 898,233.67 and 392,918.06

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Solution

The fourth proportional to 650,999.25, 898,233.67 and 392,918.06 is: 542,139.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,999.25 : 898,233.67 = 392,918.06 : x
  2. Step 2: Convert to fraction form
    650,999.25/898,233.67 = 392,918.06/x
  3. Step 3: Cross multiply
    650,999.25x = 898,233.67 × 392,918.06
  4. Step 4: Simplify right side
    650,999.25x = 352,932,231,043.08
  5. Step 5: Solve for x
    x = 352,932,231,043.08/650,999.25
  6. Step 6: Final answer
    x = 542,139.23

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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.