Home / 1,288,046.40-1,932,069.60-389,626.80

Finding the Fourth Proportional to 1,288,046.40, 1,932,069.60 and 389,626.80

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Solution

The fourth proportional to 1,288,046.40, 1,932,069.60 and 389,626.80 is: 584,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,046.40 : 1,932,069.60 = 389,626.80 : x
  2. Step 2: Convert to fraction form
    1,288,046.40/1,932,069.60 = 389,626.80/x
  3. Step 3: Cross multiply
    1,288,046.40x = 1,932,069.60 × 389,626.80
  4. Step 4: Simplify right side
    1,288,046.40x = 752,786,095,625.28
  5. Step 5: Solve for x
    x = 752,786,095,625.28/1,288,046.40
  6. Step 6: Final answer
    x = 584,440.20

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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.