Home / 1,287,500.26-1,930,497.51-388,672.42

Finding the Fourth Proportional to 1,287,500.26, 1,930,497.51 and 388,672.42

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Solution

The fourth proportional to 1,287,500.26, 1,930,497.51 and 388,672.42 is: 582,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,500.26 : 1,930,497.51 = 388,672.42 : x
  2. Step 2: Convert to fraction form
    1,287,500.26/1,930,497.51 = 388,672.42/x
  3. Step 3: Cross multiply
    1,287,500.26x = 1,930,497.51 × 388,672.42
  4. Step 4: Simplify right side
    1,287,500.26x = 750,331,139,015.67
  5. Step 5: Solve for x
    x = 750,331,139,015.67/1,287,500.26
  6. Step 6: Final answer
    x = 582,781.35

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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.