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Finding the Fourth Proportional to 436,314.46, 654,486 and 120,744.94

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Solution

The fourth proportional to 436,314.46, 654,486 and 120,744.94 is: 181,121.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,314.46 : 654,486 = 120,744.94 : x
  2. Step 2: Convert to fraction form
    436,314.46/654,486 = 120,744.94/x
  3. Step 3: Cross multiply
    436,314.46x = 654,486 × 120,744.94
  4. Step 4: Simplify right side
    436,314.46x = 79,025,872,800.84
  5. Step 5: Solve for x
    x = 79,025,872,800.84/436,314.46
  6. Step 6: Final answer
    x = 181,121.37

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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.