Home / 1,288,176.80-1,932,255.60-389,616.80

Finding the Fourth Proportional to 1,288,176.80, 1,932,255.60 and 389,616.80

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Solution

The fourth proportional to 1,288,176.80, 1,932,255.60 and 389,616.80 is: 584,422.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,176.80 : 1,932,255.60 = 389,616.80 : x
  2. Step 2: Convert to fraction form
    1,288,176.80/1,932,255.60 = 389,616.80/x
  3. Step 3: Cross multiply
    1,288,176.80x = 1,932,255.60 × 389,616.80
  4. Step 4: Simplify right side
    1,288,176.80x = 752,839,243,654.08
  5. Step 5: Solve for x
    x = 752,839,243,654.08/1,288,176.80
  6. Step 6: Final answer
    x = 584,422.30

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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.