Home / 989,110.20-1,485,414.90-765,015.60

Finding the Fourth Proportional to 989,110.20, 1,485,414.90 and 765,015.60

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Solution

The fourth proportional to 989,110.20, 1,485,414.90 and 765,015.60 is: 1,148,876.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,110.20 : 1,485,414.90 = 765,015.60 : x
  2. Step 2: Convert to fraction form
    989,110.20/1,485,414.90 = 765,015.60/x
  3. Step 3: Cross multiply
    989,110.20x = 1,485,414.90 × 765,015.60
  4. Step 4: Simplify right side
    989,110.20x = 1,136,365,570,972.44
  5. Step 5: Solve for x
    x = 1,136,365,570,972.44/989,110.20
  6. Step 6: Final answer
    x = 1,148,876.61

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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.