Home / 1,311,116.65-1,966,488.12-412,535.05

Finding the Fourth Proportional to 1,311,116.65, 1,966,488.12 and 412,535.05

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Solution

The fourth proportional to 1,311,116.65, 1,966,488.12 and 412,535.05 is: 618,743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,116.65 : 1,966,488.12 = 412,535.05 : x
  2. Step 2: Convert to fraction form
    1,311,116.65/1,966,488.12 = 412,535.05/x
  3. Step 3: Cross multiply
    1,311,116.65x = 1,966,488.12 × 412,535.05
  4. Step 4: Simplify right side
    1,311,116.65x = 811,245,274,908.61
  5. Step 5: Solve for x
    x = 811,245,274,908.61/1,311,116.65
  6. Step 6: Final answer
    x = 618,743.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.