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Finding the Fourth Proportional to 3,385,868.37, 5,078,704.14 and 989,769.30

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Solution

The fourth proportional to 3,385,868.37, 5,078,704.14 and 989,769.30 is: 1,484,625.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,385,868.37 : 5,078,704.14 = 989,769.30 : x
  2. Step 2: Convert to fraction form
    3,385,868.37/5,078,704.14 = 989,769.30/x
  3. Step 3: Cross multiply
    3,385,868.37x = 5,078,704.14 × 989,769.30
  4. Step 4: Simplify right side
    3,385,868.37x = 5,026,745,441,554.90
  5. Step 5: Solve for x
    x = 5,026,745,441,554.90/3,385,868.37
  6. Step 6: Final answer
    x = 1,484,625.18

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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.