Home / 989,728.72-1,483,269.56-515,418.32

Finding the Fourth Proportional to 989,728.72, 1,483,269.56 and 515,418.32

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Solution

The fourth proportional to 989,728.72, 1,483,269.56 and 515,418.32 is: 772,438.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,728.72 : 1,483,269.56 = 515,418.32 : x
  2. Step 2: Convert to fraction form
    989,728.72/1,483,269.56 = 515,418.32/x
  3. Step 3: Cross multiply
    989,728.72x = 1,483,269.56 × 515,418.32
  4. Step 4: Simplify right side
    989,728.72x = 764,504,304,722.34
  5. Step 5: Solve for x
    x = 764,504,304,722.34/989,728.72
  6. Step 6: Final answer
    x = 772,438.23

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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.