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Finding the Fourth Proportional to 620,658.91, 929,696.67 and 394,901.04

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Solution

The fourth proportional to 620,658.91, 929,696.67 and 394,901.04 is: 591,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,658.91 : 929,696.67 = 394,901.04 : x
  2. Step 2: Convert to fraction form
    620,658.91/929,696.67 = 394,901.04/x
  3. Step 3: Cross multiply
    620,658.91x = 929,696.67 × 394,901.04
  4. Step 4: Simplify right side
    620,658.91x = 367,138,185,353.90
  5. Step 5: Solve for x
    x = 367,138,185,353.90/620,658.91
  6. Step 6: Final answer
    x = 591,529.71

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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.