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Finding the Third Proportional to 398,979 and 583,605

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Solution

The third proportional to 398,979 and 583,605 is: 853,665.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,979 : 583,605 = 583,605 : x
  2. Step 2: Convert to fraction form
    398,979/583,605 = 583,605/x
  3. Step 3: Cross multiply
    398,979x = 583,605 × 583,605
  4. Step 4: Simplify right side
    398,979x = 340,594,796,025
  5. Step 5: Solve for x
    x = 340,594,796,025/398,979
  6. Step 6: Final answer
    x = 853,665.97

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These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.