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Finding the Third Proportional to 319,140 and 485,622

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Solution

The third proportional to 319,140 and 485,622 is: 738,950.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,140 : 485,622 = 485,622 : x
  2. Step 2: Convert to fraction form
    319,140/485,622 = 485,622/x
  3. Step 3: Cross multiply
    319,140x = 485,622 × 485,622
  4. Step 4: Simplify right side
    319,140x = 235,828,726,884
  5. Step 5: Solve for x
    x = 235,828,726,884/319,140
  6. Step 6: Final answer
    x = 738,950.70

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.