Home / 1,988,076.78-2,982,115.20-492,168.78

Finding the Fourth Proportional to 1,988,076.78, 2,982,115.20 and 492,168.78

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Solution

The fourth proportional to 1,988,076.78, 2,982,115.20 and 492,168.78 is: 738,253.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,076.78 : 2,982,115.20 = 492,168.78 : x
  2. Step 2: Convert to fraction form
    1,988,076.78/2,982,115.20 = 492,168.78/x
  3. Step 3: Cross multiply
    1,988,076.78x = 2,982,115.20 × 492,168.78
  4. Step 4: Simplify right side
    1,988,076.78x = 1,467,703,999,803.46
  5. Step 5: Solve for x
    x = 1,467,703,999,803.46/1,988,076.78
  6. Step 6: Final answer
    x = 738,253.18

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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.