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Finding the Third Proportional to 319,748 and 480,446

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Solution

The third proportional to 319,748 and 480,446 is: 721,907.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,748 : 480,446 = 480,446 : x
  2. Step 2: Convert to fraction form
    319,748/480,446 = 480,446/x
  3. Step 3: Cross multiply
    319,748x = 480,446 × 480,446
  4. Step 4: Simplify right side
    319,748x = 230,828,358,916
  5. Step 5: Solve for x
    x = 230,828,358,916/319,748
  6. Step 6: Final answer
    x = 721,907.12

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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.