Home / 858,913.20-1,288,515.60-259,869.60

Finding the Fourth Proportional to 858,913.20, 1,288,515.60 and 259,869.60

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Solution

The fourth proportional to 858,913.20, 1,288,515.60 and 259,869.60 is: 389,848.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,913.20 : 1,288,515.60 = 259,869.60 : x
  2. Step 2: Convert to fraction form
    858,913.20/1,288,515.60 = 259,869.60/x
  3. Step 3: Cross multiply
    858,913.20x = 1,288,515.60 × 259,869.60
  4. Step 4: Simplify right side
    858,913.20x = 334,846,033,565.76
  5. Step 5: Solve for x
    x = 334,846,033,565.76/858,913.20
  6. Step 6: Final answer
    x = 389,848.51

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1.5x scale

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.