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Finding the Third Proportional to 389,797,639 and 866,747,890

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Solution

The third proportional to 389,797,639 and 866,747,890 is: 1,927,286,955.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,797,639 : 866,747,890 = 866,747,890 : x
  2. Step 2: Convert to fraction form
    389,797,639/866,747,890 = 866,747,890/x
  3. Step 3: Cross multiply
    389,797,639x = 866,747,890 × 866,747,890
  4. Step 4: Simplify right side
    389,797,639x = 751,251,904,819,452,160
  5. Step 5: Solve for x
    x = 751,251,904,819,452,160/389,797,639
  6. Step 6: Final answer
    x = 1,927,286,955.22

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.