Home / 1,280,102.90-1,920,147.42-521,941.44

Finding the Fourth Proportional to 1,280,102.90, 1,920,147.42 and 521,941.44

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Solution

The fourth proportional to 1,280,102.90, 1,920,147.42 and 521,941.44 is: 782,909.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,102.90 : 1,920,147.42 = 521,941.44 : x
  2. Step 2: Convert to fraction form
    1,280,102.90/1,920,147.42 = 521,941.44/x
  3. Step 3: Cross multiply
    1,280,102.90x = 1,920,147.42 × 521,941.44
  4. Step 4: Simplify right side
    1,280,102.90x = 1,002,204,509,407.08
  5. Step 5: Solve for x
    x = 1,002,204,509,407.08/1,280,102.90
  6. Step 6: Final answer
    x = 782,909.33

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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.