Home / 858,877.20-1,288,461.60-259,833.60

Finding the Fourth Proportional to 858,877.20, 1,288,461.60 and 259,833.60

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Solution

The fourth proportional to 858,877.20, 1,288,461.60 and 259,833.60 is: 389,794.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,877.20 : 1,288,461.60 = 259,833.60 : x
  2. Step 2: Convert to fraction form
    858,877.20/1,288,461.60 = 259,833.60/x
  3. Step 3: Cross multiply
    858,877.20x = 1,288,461.60 × 259,833.60
  4. Step 4: Simplify right side
    858,877.20x = 334,785,615,989.76
  5. Step 5: Solve for x
    x = 334,785,615,989.76/858,877.20
  6. Step 6: Final answer
    x = 389,794.51

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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.