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Finding the Third Proportional to 18,861,403 and 28,385,540

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Solution

The third proportional to 18,861,403 and 28,385,540 is: 42,718,926.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861,403 : 28,385,540 = 28,385,540 : x
  2. Step 2: Convert to fraction form
    18,861,403/28,385,540 = 28,385,540/x
  3. Step 3: Cross multiply
    18,861,403x = 28,385,540 × 28,385,540
  4. Step 4: Simplify right side
    18,861,403x = 805,738,881,091,600
  5. Step 5: Solve for x
    x = 805,738,881,091,600/18,861,403
  6. Step 6: Final answer
    x = 42,718,926.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.