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Finding the Fourth Proportional to 665,682.68, 998,773.46 and 345,634.76

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Solution

The fourth proportional to 665,682.68, 998,773.46 and 345,634.76 is: 518,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,682.68 : 998,773.46 = 345,634.76 : x
  2. Step 2: Convert to fraction form
    665,682.68/998,773.46 = 345,634.76/x
  3. Step 3: Cross multiply
    665,682.68x = 998,773.46 × 345,634.76
  4. Step 4: Simplify right side
    665,682.68x = 345,210,825,141.47
  5. Step 5: Solve for x
    x = 345,210,825,141.47/665,682.68
  6. Step 6: Final answer
    x = 518,581.65

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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.