Home / 1,412,900.76-1,949,854.38-809,405.40

Finding the Fourth Proportional to 1,412,900.76, 1,949,854.38 and 809,405.40

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Solution

The fourth proportional to 1,412,900.76, 1,949,854.38 and 809,405.40 is: 1,117,008.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412,900.76 : 1,949,854.38 = 809,405.40 : x
  2. Step 2: Convert to fraction form
    1,412,900.76/1,949,854.38 = 809,405.40/x
  3. Step 3: Cross multiply
    1,412,900.76x = 1,949,854.38 × 809,405.40
  4. Step 4: Simplify right side
    1,412,900.76x = 1,578,222,664,385.65
  5. Step 5: Solve for x
    x = 1,578,222,664,385.65/1,412,900.76
  6. Step 6: Final answer
    x = 1,117,008.86

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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.