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Finding the Fourth Proportional to 978,977.88, 1,350,968.22 and 565,515

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Solution

The fourth proportional to 978,977.88, 1,350,968.22 and 565,515 is: 780,398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,977.88 : 1,350,968.22 = 565,515 : x
  2. Step 2: Convert to fraction form
    978,977.88/1,350,968.22 = 565,515/x
  3. Step 3: Cross multiply
    978,977.88x = 1,350,968.22 × 565,515
  4. Step 4: Simplify right side
    978,977.88x = 763,992,792,933.30
  5. Step 5: Solve for x
    x = 763,992,792,933.30/978,977.88
  6. Step 6: Final answer
    x = 780,398.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.