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Finding the Fourth Proportional to 576,707.80, 865,061.58 and 419,933.92

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Solution

The fourth proportional to 576,707.80, 865,061.58 and 419,933.92 is: 629,900.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,707.80 : 865,061.58 = 419,933.92 : x
  2. Step 2: Convert to fraction form
    576,707.80/865,061.58 = 419,933.92/x
  3. Step 3: Cross multiply
    576,707.80x = 865,061.58 × 419,933.92
  4. Step 4: Simplify right side
    576,707.80x = 363,268,700,330.79
  5. Step 5: Solve for x
    x = 363,268,700,330.79/576,707.80
  6. Step 6: Final answer
    x = 629,900.79

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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.