Home / 1,288,180.28-1,932,573.90-389,629.46

Finding the Fourth Proportional to 1,288,180.28, 1,932,573.90 and 389,629.46

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Solution

The fourth proportional to 1,288,180.28, 1,932,573.90 and 389,629.46 is: 584,535.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,180.28 : 1,932,573.90 = 389,629.46 : x
  2. Step 2: Convert to fraction form
    1,288,180.28/1,932,573.90 = 389,629.46/x
  3. Step 3: Cross multiply
    1,288,180.28x = 1,932,573.90 × 389,629.46
  4. Step 4: Simplify right side
    1,288,180.28x = 752,987,715,404.23
  5. Step 5: Solve for x
    x = 752,987,715,404.23/1,288,180.28
  6. Step 6: Final answer
    x = 584,535.98

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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.