Home / 1,189,983-1,642,011.28-699,974.72

Finding the Fourth Proportional to 1,189,983, 1,642,011.28 and 699,974.72

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Solution

The fourth proportional to 1,189,983, 1,642,011.28 and 699,974.72 is: 965,867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,983 : 1,642,011.28 = 699,974.72 : x
  2. Step 2: Convert to fraction form
    1,189,983/1,642,011.28 = 699,974.72/x
  3. Step 3: Cross multiply
    1,189,983x = 1,642,011.28 × 699,974.72
  4. Step 4: Simplify right side
    1,189,983x = 1,149,366,385,954.84
  5. Step 5: Solve for x
    x = 1,149,366,385,954.84/1,189,983
  6. Step 6: Final answer
    x = 965,867.90

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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.