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Finding the Third Proportional to 402,795,556 and 621,986,782

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Solution

The third proportional to 402,795,556 and 621,986,782 is: 960,456,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,795,556 : 621,986,782 = 621,986,782 : x
  2. Step 2: Convert to fraction form
    402,795,556/621,986,782 = 621,986,782/x
  3. Step 3: Cross multiply
    402,795,556x = 621,986,782 × 621,986,782
  4. Step 4: Simplify right side
    402,795,556x = 386,867,556,982,715,520
  5. Step 5: Solve for x
    x = 386,867,556,982,715,520/402,795,556
  6. Step 6: Final answer
    x = 960,456,368.55

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.