Home / 666,080.19-998,969.57-305,904.78

Finding the Fourth Proportional to 666,080.19, 998,969.57 and 305,904.78

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Solution

The fourth proportional to 666,080.19, 998,969.57 and 305,904.78 is: 458,787.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,080.19 : 998,969.57 = 305,904.78 : x
  2. Step 2: Convert to fraction form
    666,080.19/998,969.57 = 305,904.78/x
  3. Step 3: Cross multiply
    666,080.19x = 998,969.57 × 305,904.78
  4. Step 4: Simplify right side
    666,080.19x = 305,589,565,008.02
  5. Step 5: Solve for x
    x = 305,589,565,008.02/666,080.19
  6. Step 6: Final answer
    x = 458,787.95

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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.