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Finding the Fourth Proportional to 664,653.87, 917,217.68 and 362,847.87

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Solution

The fourth proportional to 664,653.87, 917,217.68 and 362,847.87 is: 500,727.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,653.87 : 917,217.68 = 362,847.87 : x
  2. Step 2: Convert to fraction form
    664,653.87/917,217.68 = 362,847.87/x
  3. Step 3: Cross multiply
    664,653.87x = 917,217.68 × 362,847.87
  4. Step 4: Simplify right side
    664,653.87x = 332,810,479,700.10
  5. Step 5: Solve for x
    x = 332,810,479,700.10/664,653.87
  6. Step 6: Final answer
    x = 500,727.51

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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.