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Finding the Fourth Proportional to 660,764.47, 911,781.83 and 366,406.79

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Solution

The fourth proportional to 660,764.47, 911,781.83 and 366,406.79 is: 505,600.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,764.47 : 911,781.83 = 366,406.79 : x
  2. Step 2: Convert to fraction form
    660,764.47/911,781.83 = 366,406.79/x
  3. Step 3: Cross multiply
    660,764.47x = 911,781.83 × 366,406.79
  4. Step 4: Simplify right side
    660,764.47x = 334,083,049,867.73
  5. Step 5: Solve for x
    x = 334,083,049,867.73/660,764.47
  6. Step 6: Final answer
    x = 505,600.81

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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.