Home / 1,988,605.32-2,744,198.09-1,215,530.55

Finding the Fourth Proportional to 1,988,605.32, 2,744,198.09 and 1,215,530.55

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Solution

The fourth proportional to 1,988,605.32, 2,744,198.09 and 1,215,530.55 is: 1,677,384.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,605.32 : 2,744,198.09 = 1,215,530.55 : x
  2. Step 2: Convert to fraction form
    1,988,605.32/2,744,198.09 = 1,215,530.55/x
  3. Step 3: Cross multiply
    1,988,605.32x = 2,744,198.09 × 1,215,530.55
  4. Step 4: Simplify right side
    1,988,605.32x = 3,335,656,613,646.65
  5. Step 5: Solve for x
    x = 3,335,656,613,646.65/1,988,605.32
  6. Step 6: Final answer
    x = 1,677,384.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.