Home / 1,223,620.64-1,690,009.44-815,049.44

Finding the Fourth Proportional to 1,223,620.64, 1,690,009.44 and 815,049.44

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Solution

The fourth proportional to 1,223,620.64, 1,690,009.44 and 815,049.44 is: 1,125,709.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,620.64 : 1,690,009.44 = 815,049.44 : x
  2. Step 2: Convert to fraction form
    1,223,620.64/1,690,009.44 = 815,049.44/x
  3. Step 3: Cross multiply
    1,223,620.64x = 1,690,009.44 × 815,049.44
  4. Step 4: Simplify right side
    1,223,620.64x = 1,377,441,247,666.71
  5. Step 5: Solve for x
    x = 1,377,441,247,666.71/1,223,620.64
  6. Step 6: Final answer
    x = 1,125,709.39

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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.