Home / 1,290,380.60-1,935,964.56-659,737.28

Finding the Fourth Proportional to 1,290,380.60, 1,935,964.56 and 659,737.28

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Solution

The fourth proportional to 1,290,380.60, 1,935,964.56 and 659,737.28 is: 989,807.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,380.60 : 1,935,964.56 = 659,737.28 : x
  2. Step 2: Convert to fraction form
    1,290,380.60/1,935,964.56 = 659,737.28/x
  3. Step 3: Cross multiply
    1,290,380.60x = 1,935,964.56 × 659,737.28
  4. Step 4: Simplify right side
    1,290,380.60x = 1,277,227,992,990.80
  5. Step 5: Solve for x
    x = 1,277,227,992,990.80/1,290,380.60
  6. Step 6: Final answer
    x = 989,807.19

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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.