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Finding the Third Proportional to 7,890,390 and 16,999,672

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Solution

The third proportional to 7,890,390 and 16,999,672 is: 36,625,420.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890,390 : 16,999,672 = 16,999,672 : x
  2. Step 2: Convert to fraction form
    7,890,390/16,999,672 = 16,999,672/x
  3. Step 3: Cross multiply
    7,890,390x = 16,999,672 × 16,999,672
  4. Step 4: Simplify right side
    7,890,390x = 288,988,848,107,584
  5. Step 5: Solve for x
    x = 288,988,848,107,584/7,890,390
  6. Step 6: Final answer
    x = 36,625,420.05

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.