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Finding the Fourth Proportional to 664,543.77, 996,767.45 and 259,659.87

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Solution

The fourth proportional to 664,543.77, 996,767.45 and 259,659.87 is: 389,470.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,543.77 : 996,767.45 = 259,659.87 : x
  2. Step 2: Convert to fraction form
    664,543.77/996,767.45 = 259,659.87/x
  3. Step 3: Cross multiply
    664,543.77x = 996,767.45 × 259,659.87
  4. Step 4: Simplify right side
    664,543.77x = 258,820,506,487.23
  5. Step 5: Solve for x
    x = 258,820,506,487.23/664,543.77
  6. Step 6: Final answer
    x = 389,470.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.