Home / 1,212,785.20-1,818,011.40-942,763.60

Finding the Fourth Proportional to 1,212,785.20, 1,818,011.40 and 942,763.60

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Solution

The fourth proportional to 1,212,785.20, 1,818,011.40 and 942,763.60 is: 1,413,238.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,785.20 : 1,818,011.40 = 942,763.60 : x
  2. Step 2: Convert to fraction form
    1,212,785.20/1,818,011.40 = 942,763.60/x
  3. Step 3: Cross multiply
    1,212,785.20x = 1,818,011.40 × 942,763.60
  4. Step 4: Simplify right side
    1,212,785.20x = 1,713,954,972,305.04
  5. Step 5: Solve for x
    x = 1,713,954,972,305.04/1,212,785.20
  6. Step 6: Final answer
    x = 1,413,238.69

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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.