Home / 419,981.61-629,974.92-104,438.52

Finding the Fourth Proportional to 419,981.61, 629,974.92 and 104,438.52

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Solution

The fourth proportional to 419,981.61, 629,974.92 and 104,438.52 is: 156,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,981.61 : 629,974.92 = 104,438.52 : x
  2. Step 2: Convert to fraction form
    419,981.61/629,974.92 = 104,438.52/x
  3. Step 3: Cross multiply
    419,981.61x = 629,974.92 × 104,438.52
  4. Step 4: Simplify right side
    419,981.61x = 65,793,648,281.92
  5. Step 5: Solve for x
    x = 65,793,648,281.92/419,981.61
  6. Step 6: Final answer
    x = 156,658.40

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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.