Home / 1,102,991.39-1,521,892.02-643,897.62

Finding the Fourth Proportional to 1,102,991.39, 1,521,892.02 and 643,897.62

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Solution

The fourth proportional to 1,102,991.39, 1,521,892.02 and 643,897.62 is: 888,440.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102,991.39 : 1,521,892.02 = 643,897.62 : x
  2. Step 2: Convert to fraction form
    1,102,991.39/1,521,892.02 = 643,897.62/x
  3. Step 3: Cross multiply
    1,102,991.39x = 1,521,892.02 × 643,897.62
  4. Step 4: Simplify right side
    1,102,991.39x = 979,942,646,556.72
  5. Step 5: Solve for x
    x = 979,942,646,556.72/1,102,991.39
  6. Step 6: Final answer
    x = 888,440.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.