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Finding the Fourth Proportional to 695,145.67, 959,274.46 and 389,193.43

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Solution

The fourth proportional to 695,145.67, 959,274.46 and 389,193.43 is: 537,072.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,145.67 : 959,274.46 = 389,193.43 : x
  2. Step 2: Convert to fraction form
    695,145.67/959,274.46 = 389,193.43/x
  3. Step 3: Cross multiply
    695,145.67x = 959,274.46 × 389,193.43
  4. Step 4: Simplify right side
    695,145.67x = 373,343,315,452.83
  5. Step 5: Solve for x
    x = 373,343,315,452.83/695,145.67
  6. Step 6: Final answer
    x = 537,072.06

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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.