Home / 665,935.11-998,736.57-261,209.57

Finding the Fourth Proportional to 665,935.11, 998,736.57 and 261,209.57

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Solution

The fourth proportional to 665,935.11, 998,736.57 and 261,209.57 is: 391,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,935.11 : 998,736.57 = 261,209.57 : x
  2. Step 2: Convert to fraction form
    665,935.11/998,736.57 = 261,209.57/x
  3. Step 3: Cross multiply
    665,935.11x = 998,736.57 × 261,209.57
  4. Step 4: Simplify right side
    665,935.11x = 260,879,544,999.29
  5. Step 5: Solve for x
    x = 260,879,544,999.29/665,935.11
  6. Step 6: Final answer
    x = 391,749.20

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1.5x scale

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.