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Finding the Fourth Proportional to 664,980.60, 997,616.70 and 328,182.60

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Solution

The fourth proportional to 664,980.60, 997,616.70 and 328,182.60 is: 492,345.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,980.60 : 997,616.70 = 328,182.60 : x
  2. Step 2: Convert to fraction form
    664,980.60/997,616.70 = 328,182.60/x
  3. Step 3: Cross multiply
    664,980.60x = 997,616.70 × 328,182.60
  4. Step 4: Simplify right side
    664,980.60x = 327,400,442,409.42
  5. Step 5: Solve for x
    x = 327,400,442,409.42/664,980.60
  6. Step 6: Final answer
    x = 492,345.86

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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.