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Finding the Fourth Proportional to 892,144, 1,338,478.88 and 359,390.88

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Solution

The fourth proportional to 892,144, 1,338,478.88 and 359,390.88 is: 539,192.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,144 : 1,338,478.88 = 359,390.88 : x
  2. Step 2: Convert to fraction form
    892,144/1,338,478.88 = 359,390.88/x
  3. Step 3: Cross multiply
    892,144x = 1,338,478.88 × 359,390.88
  4. Step 4: Simplify right side
    892,144x = 481,037,102,544.61
  5. Step 5: Solve for x
    x = 481,037,102,544.61/892,144
  6. Step 6: Final answer
    x = 539,192.22

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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.