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Finding the Fourth Proportional to 3,889,375.80, 5,834,063.70 and 1,645,222.20

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Solution

The fourth proportional to 3,889,375.80, 5,834,063.70 and 1,645,222.20 is: 2,467,833.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889,375.80 : 5,834,063.70 = 1,645,222.20 : x
  2. Step 2: Convert to fraction form
    3,889,375.80/5,834,063.70 = 1,645,222.20/x
  3. Step 3: Cross multiply
    3,889,375.80x = 5,834,063.70 × 1,645,222.20
  4. Step 4: Simplify right side
    3,889,375.80x = 9,598,331,115,454.14
  5. Step 5: Solve for x
    x = 9,598,331,115,454.14/3,889,375.80
  6. Step 6: Final answer
    x = 2,467,833.30

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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.