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Finding the Fourth Proportional to 661,797.48, 992,352.78 and 324,690.60

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Solution

The fourth proportional to 661,797.48, 992,352.78 and 324,690.60 is: 486,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,797.48 : 992,352.78 = 324,690.60 : x
  2. Step 2: Convert to fraction form
    661,797.48/992,352.78 = 324,690.60/x
  3. Step 3: Cross multiply
    661,797.48x = 992,352.78 × 324,690.60
  4. Step 4: Simplify right side
    661,797.48x = 322,207,619,549.87
  5. Step 5: Solve for x
    x = 322,207,619,549.87/661,797.48
  6. Step 6: Final answer
    x = 486,867.40

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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.