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Finding the Fourth Proportional to 658,317.61, 987,722.45 and 259,236.58

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Solution

The fourth proportional to 658,317.61, 987,722.45 and 259,236.58 is: 388,951.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,317.61 : 987,722.45 = 259,236.58 : x
  2. Step 2: Convert to fraction form
    658,317.61/987,722.45 = 259,236.58/x
  3. Step 3: Cross multiply
    658,317.61x = 987,722.45 × 259,236.58
  4. Step 4: Simplify right side
    658,317.61x = 256,053,783,692.43
  5. Step 5: Solve for x
    x = 256,053,783,692.43/658,317.61
  6. Step 6: Final answer
    x = 388,951.75

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1.5x scale

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.