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Finding the Fourth Proportional to 665,494.56, 998,324.28 and 260,634.24

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Solution

The fourth proportional to 665,494.56, 998,324.28 and 260,634.24 is: 390,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,494.56 : 998,324.28 = 260,634.24 : x
  2. Step 2: Convert to fraction form
    665,494.56/998,324.28 = 260,634.24/x
  3. Step 3: Cross multiply
    665,494.56x = 998,324.28 × 260,634.24
  4. Step 4: Simplify right side
    665,494.56x = 260,197,489,991.35
  5. Step 5: Solve for x
    x = 260,197,489,991.35/665,494.56
  6. Step 6: Final answer
    x = 390,983.65

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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.