Home / 989,111.20-1,485,416.40-765,016.60

Finding the Fourth Proportional to 989,111.20, 1,485,416.40 and 765,016.60

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Solution

The fourth proportional to 989,111.20, 1,485,416.40 and 765,016.60 is: 1,148,878.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,111.20 : 1,485,416.40 = 765,016.60 : x
  2. Step 2: Convert to fraction form
    989,111.20/1,485,416.40 = 765,016.60/x
  3. Step 3: Cross multiply
    989,111.20x = 1,485,416.40 × 765,016.60
  4. Step 4: Simplify right side
    989,111.20x = 1,136,368,203,912.24
  5. Step 5: Solve for x
    x = 1,136,368,203,912.24/989,111.20
  6. Step 6: Final answer
    x = 1,148,878.11

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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.