Home / 1,287,499.26-1,930,496.01-388,671.42

Finding the Fourth Proportional to 1,287,499.26, 1,930,496.01 and 388,671.42

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Solution

The fourth proportional to 1,287,499.26, 1,930,496.01 and 388,671.42 is: 582,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,499.26 : 1,930,496.01 = 388,671.42 : x
  2. Step 2: Convert to fraction form
    1,287,499.26/1,930,496.01 = 388,671.42/x
  3. Step 3: Cross multiply
    1,287,499.26x = 1,930,496.01 × 388,671.42
  4. Step 4: Simplify right side
    1,287,499.26x = 750,328,625,511.03
  5. Step 5: Solve for x
    x = 750,328,625,511.03/1,287,499.26
  6. Step 6: Final answer
    x = 582,779.85

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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.