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Finding the Fourth Proportional to 1,894,461.82, 2,839,777.92 and 815,678.02

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Solution

The fourth proportional to 1,894,461.82, 2,839,777.92 and 815,678.02 is: 1,222,692.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894,461.82 : 2,839,777.92 = 815,678.02 : x
  2. Step 2: Convert to fraction form
    1,894,461.82/2,839,777.92 = 815,678.02/x
  3. Step 3: Cross multiply
    1,894,461.82x = 2,839,777.92 × 815,678.02
  4. Step 4: Simplify right side
    1,894,461.82x = 2,316,344,431,025.32
  5. Step 5: Solve for x
    x = 2,316,344,431,025.32/1,894,461.82
  6. Step 6: Final answer
    x = 1,222,692.59

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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.