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Finding the Fourth Proportional to 931,893.39, 1,395,791.10 and 770,136.03

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Solution

The fourth proportional to 931,893.39, 1,395,791.10 and 770,136.03 is: 1,153,510.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,893.39 : 1,395,791.10 = 770,136.03 : x
  2. Step 2: Convert to fraction form
    931,893.39/1,395,791.10 = 770,136.03/x
  3. Step 3: Cross multiply
    931,893.39x = 1,395,791.10 × 770,136.03
  4. Step 4: Simplify right side
    931,893.39x = 1,074,949,016,463.33
  5. Step 5: Solve for x
    x = 1,074,949,016,463.33/931,893.39
  6. Step 6: Final answer
    x = 1,153,510.72

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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.