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Finding the Third Proportional to 380,712,672 and 513,670,782

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Solution

The third proportional to 380,712,672 and 513,670,782 is: 693,062,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,712,672 : 513,670,782 = 513,670,782 : x
  2. Step 2: Convert to fraction form
    380,712,672/513,670,782 = 513,670,782/x
  3. Step 3: Cross multiply
    380,712,672x = 513,670,782 × 513,670,782
  4. Step 4: Simplify right side
    380,712,672x = 263,857,672,280,491,520
  5. Step 5: Solve for x
    x = 263,857,672,280,491,520/380,712,672
  6. Step 6: Final answer
    x = 693,062,489.60

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These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.