Home / 1,391,811.28-1,921,624.80-1,068,944.56

Finding the Fourth Proportional to 1,391,811.28, 1,921,624.80 and 1,068,944.56

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Solution

The fourth proportional to 1,391,811.28, 1,921,624.80 and 1,068,944.56 is: 1,475,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,811.28 : 1,921,624.80 = 1,068,944.56 : x
  2. Step 2: Convert to fraction form
    1,391,811.28/1,921,624.80 = 1,068,944.56/x
  3. Step 3: Cross multiply
    1,391,811.28x = 1,921,624.80 × 1,068,944.56
  4. Step 4: Simplify right side
    1,391,811.28x = 2,054,110,376,321.09
  5. Step 5: Solve for x
    x = 2,054,110,376,321.09/1,391,811.28
  6. Step 6: Final answer
    x = 1,475,854.09

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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.