Home / 1,206,635.64-1,663,985.28-815,029.80

Finding the Fourth Proportional to 1,206,635.64, 1,663,985.28 and 815,029.80

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Solution

The fourth proportional to 1,206,635.64, 1,663,985.28 and 815,029.80 is: 1,123,949.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,635.64 : 1,663,985.28 = 815,029.80 : x
  2. Step 2: Convert to fraction form
    1,206,635.64/1,663,985.28 = 815,029.80/x
  3. Step 3: Cross multiply
    1,206,635.64x = 1,663,985.28 × 815,029.80
  4. Step 4: Simplify right side
    1,206,635.64x = 1,356,197,589,961.34
  5. Step 5: Solve for x
    x = 1,356,197,589,961.34/1,206,635.64
  6. Step 6: Final answer
    x = 1,123,949.55

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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.