Home / 1,211,620.11-1,672,320.72-753,081

Finding the Fourth Proportional to 1,211,620.11, 1,672,320.72 and 753,081

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Solution

The fourth proportional to 1,211,620.11, 1,672,320.72 and 753,081 is: 1,039,428.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,620.11 : 1,672,320.72 = 753,081 : x
  2. Step 2: Convert to fraction form
    1,211,620.11/1,672,320.72 = 753,081/x
  3. Step 3: Cross multiply
    1,211,620.11x = 1,672,320.72 × 753,081
  4. Step 4: Simplify right side
    1,211,620.11x = 1,259,392,960,138.32
  5. Step 5: Solve for x
    x = 1,259,392,960,138.32/1,211,620.11
  6. Step 6: Final answer
    x = 1,039,428.90

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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.