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Finding the Fourth Proportional to 442,952.20, 664,428.30 and 323,979.40

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Solution

The fourth proportional to 442,952.20, 664,428.30 and 323,979.40 is: 485,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,952.20 : 664,428.30 = 323,979.40 : x
  2. Step 2: Convert to fraction form
    442,952.20/664,428.30 = 323,979.40/x
  3. Step 3: Cross multiply
    442,952.20x = 664,428.30 × 323,979.40
  4. Step 4: Simplify right side
    442,952.20x = 215,261,081,977.02
  5. Step 5: Solve for x
    x = 215,261,081,977.02/442,952.20
  6. Step 6: Final answer
    x = 485,969.10

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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.