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Finding the Fourth Proportional to 664,679.52, 996,986.16 and 243,922.32

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Solution

The fourth proportional to 664,679.52, 996,986.16 and 243,922.32 is: 365,871.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,679.52 : 996,986.16 = 243,922.32 : x
  2. Step 2: Convert to fraction form
    664,679.52/996,986.16 = 243,922.32/x
  3. Step 3: Cross multiply
    664,679.52x = 996,986.16 × 243,922.32
  4. Step 4: Simplify right side
    664,679.52x = 243,187,177,155.09
  5. Step 5: Solve for x
    x = 243,187,177,155.09/664,679.52
  6. Step 6: Final answer
    x = 365,871.33

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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.