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Finding the Third Proportional to 372,890,124 and 518,473,912

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Solution

The third proportional to 372,890,124 and 518,473,912 is: 720,896,532.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,890,124 : 518,473,912 = 518,473,912 : x
  2. Step 2: Convert to fraction form
    372,890,124/518,473,912 = 518,473,912/x
  3. Step 3: Cross multiply
    372,890,124x = 518,473,912 × 518,473,912
  4. Step 4: Simplify right side
    372,890,124x = 268,815,197,424,583,744
  5. Step 5: Solve for x
    x = 268,815,197,424,583,744/372,890,124
  6. Step 6: Final answer
    x = 720,896,532.58

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.