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Finding the Fourth Proportional to 3,690,678.40, 5,536,892.40 and 1,893,839.20

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Solution

The fourth proportional to 3,690,678.40, 5,536,892.40 and 1,893,839.20 is: 2,841,207.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690,678.40 : 5,536,892.40 = 1,893,839.20 : x
  2. Step 2: Convert to fraction form
    3,690,678.40/5,536,892.40 = 1,893,839.20/x
  3. Step 3: Cross multiply
    3,690,678.40x = 5,536,892.40 × 1,893,839.20
  4. Step 4: Simplify right side
    3,690,678.40x = 10,485,983,873,302.08
  5. Step 5: Solve for x
    x = 10,485,983,873,302.08/3,690,678.40
  6. Step 6: Final answer
    x = 2,841,207.70

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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.