Home / 1,209,540.11-1,669,103.10-665,727.53

Finding the Fourth Proportional to 1,209,540.11, 1,669,103.10 and 665,727.53

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Solution

The fourth proportional to 1,209,540.11, 1,669,103.10 and 665,727.53 is: 918,669.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,540.11 : 1,669,103.10 = 665,727.53 : x
  2. Step 2: Convert to fraction form
    1,209,540.11/1,669,103.10 = 665,727.53/x
  3. Step 3: Cross multiply
    1,209,540.11x = 1,669,103.10 × 665,727.53
  4. Step 4: Simplify right side
    1,209,540.11x = 1,111,167,875,732.83
  5. Step 5: Solve for x
    x = 1,111,167,875,732.83/1,209,540.11
  6. Step 6: Final answer
    x = 918,669.73

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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.