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Finding the Fourth Proportional to 660,578.61, 990,867.92 and 187,268.07

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Solution

The fourth proportional to 660,578.61, 990,867.92 and 187,268.07 is: 280,902.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,578.61 : 990,867.92 = 187,268.07 : x
  2. Step 2: Convert to fraction form
    660,578.61/990,867.92 = 187,268.07/x
  3. Step 3: Cross multiply
    660,578.61x = 990,867.92 × 187,268.07
  4. Step 4: Simplify right side
    660,578.61x = 185,557,923,003.31
  5. Step 5: Solve for x
    x = 185,557,923,003.31/660,578.61
  6. Step 6: Final answer
    x = 280,902.11

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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.