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Finding the Third Proportional to 364,406 and 509,565

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Solution

The third proportional to 364,406 and 509,565 is: 712,547.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,406 : 509,565 = 509,565 : x
  2. Step 2: Convert to fraction form
    364,406/509,565 = 509,565/x
  3. Step 3: Cross multiply
    364,406x = 509,565 × 509,565
  4. Step 4: Simplify right side
    364,406x = 259,656,489,225
  5. Step 5: Solve for x
    x = 259,656,489,225/364,406
  6. Step 6: Final answer
    x = 712,547.24

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.