Home / 1,210,257.30-1,819,322.55-857,712.90

Finding the Fourth Proportional to 1,210,257.30, 1,819,322.55 and 857,712.90

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Solution

The fourth proportional to 1,210,257.30, 1,819,322.55 and 857,712.90 is: 1,289,359.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,257.30 : 1,819,322.55 = 857,712.90 : x
  2. Step 2: Convert to fraction form
    1,210,257.30/1,819,322.55 = 857,712.90/x
  3. Step 3: Cross multiply
    1,210,257.30x = 1,819,322.55 × 857,712.90
  4. Step 4: Simplify right side
    1,210,257.30x = 1,560,456,420,395.90
  5. Step 5: Solve for x
    x = 1,560,456,420,395.90/1,210,257.30
  6. Step 6: Final answer
    x = 1,289,359.23

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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.