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Finding the Fourth Proportional to 978,371.94, 1,350,167.10 and 591,133.50

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Solution

The fourth proportional to 978,371.94, 1,350,167.10 and 591,133.50 is: 815,772.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,371.94 : 1,350,167.10 = 591,133.50 : x
  2. Step 2: Convert to fraction form
    978,371.94/1,350,167.10 = 591,133.50/x
  3. Step 3: Cross multiply
    978,371.94x = 1,350,167.10 × 591,133.50
  4. Step 4: Simplify right side
    978,371.94x = 798,129,003,407.85
  5. Step 5: Solve for x
    x = 798,129,003,407.85/978,371.94
  6. Step 6: Final answer
    x = 815,772.58

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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.