Home / 1,236,742.40-1,855,113.60-858,828.80

Finding the Fourth Proportional to 1,236,742.40, 1,855,113.60 and 858,828.80

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Solution

The fourth proportional to 1,236,742.40, 1,855,113.60 and 858,828.80 is: 1,288,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,742.40 : 1,855,113.60 = 858,828.80 : x
  2. Step 2: Convert to fraction form
    1,236,742.40/1,855,113.60 = 858,828.80/x
  3. Step 3: Cross multiply
    1,236,742.40x = 1,855,113.60 × 858,828.80
  4. Step 4: Simplify right side
    1,236,742.40x = 1,593,224,986,951.68
  5. Step 5: Solve for x
    x = 1,593,224,986,951.68/1,236,742.40
  6. Step 6: Final answer
    x = 1,288,243.20

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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.