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Finding the Third Proportional to 340,245 and 715,319

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Solution

The third proportional to 340,245 and 715,319 is: 1,503,861.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,245 : 715,319 = 715,319 : x
  2. Step 2: Convert to fraction form
    340,245/715,319 = 715,319/x
  3. Step 3: Cross multiply
    340,245x = 715,319 × 715,319
  4. Step 4: Simplify right side
    340,245x = 511,681,271,761
  5. Step 5: Solve for x
    x = 511,681,271,761/340,245
  6. Step 6: Final answer
    x = 1,503,861.25

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.