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Finding the Fourth Proportional to 658,963.85, 987,317.43 and 359,654.46

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Solution

The fourth proportional to 658,963.85, 987,317.43 and 359,654.46 is: 538,865.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,963.85 : 987,317.43 = 359,654.46 : x
  2. Step 2: Convert to fraction form
    658,963.85/987,317.43 = 359,654.46/x
  3. Step 3: Cross multiply
    658,963.85x = 987,317.43 × 359,654.46
  4. Step 4: Simplify right side
    658,963.85x = 355,093,110,400.38
  5. Step 5: Solve for x
    x = 355,093,110,400.38/658,963.85
  6. Step 6: Final answer
    x = 538,865.84

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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.