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Finding the Fourth Proportional to 2,895,891.90, 4,345,911.45 and 1,214,202.30

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Solution

The fourth proportional to 2,895,891.90, 4,345,911.45 and 1,214,202.30 is: 1,822,172.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,895,891.90 : 4,345,911.45 = 1,214,202.30 : x
  2. Step 2: Convert to fraction form
    2,895,891.90/4,345,911.45 = 1,214,202.30/x
  3. Step 3: Cross multiply
    2,895,891.90x = 4,345,911.45 × 1,214,202.30
  4. Step 4: Simplify right side
    2,895,891.90x = 5,276,815,678,186.34
  5. Step 5: Solve for x
    x = 5,276,815,678,186.34/2,895,891.90
  6. Step 6: Final answer
    x = 1,822,172.88

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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.