Home / 1,187,136.72-1,779,917.76-388,138.32

Finding the Fourth Proportional to 1,187,136.72, 1,779,917.76 and 388,138.32

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Solution

The fourth proportional to 1,187,136.72, 1,779,917.76 and 388,138.32 is: 581,950.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,136.72 : 1,779,917.76 = 388,138.32 : x
  2. Step 2: Convert to fraction form
    1,187,136.72/1,779,917.76 = 388,138.32/x
  3. Step 3: Cross multiply
    1,187,136.72x = 1,779,917.76 × 388,138.32
  4. Step 4: Simplify right side
    1,187,136.72x = 690,854,289,104.56
  5. Step 5: Solve for x
    x = 690,854,289,104.56/1,187,136.72
  6. Step 6: Final answer
    x = 581,950.06

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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.