Home / 1,338,391.80-2,008,899.90-665,233.20

Finding the Fourth Proportional to 1,338,391.80, 2,008,899.90 and 665,233.20

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Solution

The fourth proportional to 1,338,391.80, 2,008,899.90 and 665,233.20 is: 998,502.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,391.80 : 2,008,899.90 = 665,233.20 : x
  2. Step 2: Convert to fraction form
    1,338,391.80/2,008,899.90 = 665,233.20/x
  3. Step 3: Cross multiply
    1,338,391.80x = 2,008,899.90 × 665,233.20
  4. Step 4: Simplify right side
    1,338,391.80x = 1,336,386,908,956.68
  5. Step 5: Solve for x
    x = 1,336,386,908,956.68/1,338,391.80
  6. Step 6: Final answer
    x = 998,502.01

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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.