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Finding the Fourth Proportional to 518,999.06, 716,218.80 and 292,644.56

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Solution

The fourth proportional to 518,999.06, 716,218.80 and 292,644.56 is: 403,849.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,999.06 : 716,218.80 = 292,644.56 : x
  2. Step 2: Convert to fraction form
    518,999.06/716,218.80 = 292,644.56/x
  3. Step 3: Cross multiply
    518,999.06x = 716,218.80 × 292,644.56
  4. Step 4: Simplify right side
    518,999.06x = 209,597,535,589.73
  5. Step 5: Solve for x
    x = 209,597,535,589.73/518,999.06
  6. Step 6: Final answer
    x = 403,849.55

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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.