Home / 1,213,745.72-1,819,096.20-643,719.88

Finding the Fourth Proportional to 1,213,745.72, 1,819,096.20 and 643,719.88

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Solution

The fourth proportional to 1,213,745.72, 1,819,096.20 and 643,719.88 is: 964,772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,745.72 : 1,819,096.20 = 643,719.88 : x
  2. Step 2: Convert to fraction form
    1,213,745.72/1,819,096.20 = 643,719.88/x
  3. Step 3: Cross multiply
    1,213,745.72x = 1,819,096.20 × 643,719.88
  4. Step 4: Simplify right side
    1,213,745.72x = 1,170,988,387,572.46
  5. Step 5: Solve for x
    x = 1,170,988,387,572.46/1,213,745.72
  6. Step 6: Final answer
    x = 964,772.41

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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.