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Finding the Fourth Proportional to 978,452.39, 1,350,248.06 and 570,791.27

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Solution

The fourth proportional to 978,452.39, 1,350,248.06 and 570,791.27 is: 787,682.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,452.39 : 1,350,248.06 = 570,791.27 : x
  2. Step 2: Convert to fraction form
    978,452.39/1,350,248.06 = 570,791.27/x
  3. Step 3: Cross multiply
    978,452.39x = 1,350,248.06 × 570,791.27
  4. Step 4: Simplify right side
    978,452.39x = 770,709,802,128.48
  5. Step 5: Solve for x
    x = 770,709,802,128.48/978,452.39
  6. Step 6: Final answer
    x = 787,682.48

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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.