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Finding the Fourth Proportional to 547,777.62, 755,863.65 and 321,340.50

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Solution

The fourth proportional to 547,777.62, 755,863.65 and 321,340.50 is: 443,409.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,777.62 : 755,863.65 = 321,340.50 : x
  2. Step 2: Convert to fraction form
    547,777.62/755,863.65 = 321,340.50/x
  3. Step 3: Cross multiply
    547,777.62x = 755,863.65 × 321,340.50
  4. Step 4: Simplify right side
    547,777.62x = 242,889,603,222.83
  5. Step 5: Solve for x
    x = 242,889,603,222.83/547,777.62
  6. Step 6: Final answer
    x = 443,409.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.