Home / 1,242,539.03-1,861,372.76-643,892.88

Finding the Fourth Proportional to 1,242,539.03, 1,861,372.76 and 643,892.88

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Solution

The fourth proportional to 1,242,539.03, 1,861,372.76 and 643,892.88 is: 964,577.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,539.03 : 1,861,372.76 = 643,892.88 : x
  2. Step 2: Convert to fraction form
    1,242,539.03/1,861,372.76 = 643,892.88/x
  3. Step 3: Cross multiply
    1,242,539.03x = 1,861,372.76 × 643,892.88
  4. Step 4: Simplify right side
    1,242,539.03x = 1,198,524,668,799.68
  5. Step 5: Solve for x
    x = 1,198,524,668,799.68/1,242,539.03
  6. Step 6: Final answer
    x = 964,577.08

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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.