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Finding the Third Proportional to 372,890,121.50 and 518,473,907.50

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Solution

The third proportional to 372,890,121.50 and 518,473,907.50 is: 720,896,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,890,121.50 : 518,473,907.50 = 518,473,907.50 : x
  2. Step 2: Convert to fraction form
    372,890,121.50/518,473,907.50 = 518,473,907.50/x
  3. Step 3: Cross multiply
    372,890,121.50x = 518,473,907.50 × 518,473,907.50
  4. Step 4: Simplify right side
    372,890,121.50x = 268,815,192,758,318,560
  5. Step 5: Solve for x
    x = 268,815,192,758,318,560/372,890,121.50
  6. Step 6: Final answer
    x = 720,896,524.90

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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.