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Finding the Third Proportional to 402,795,480 and 621,986,704

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Solution

The third proportional to 402,795,480 and 621,986,704 is: 960,456,308.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,795,480 : 621,986,704 = 621,986,704 : x
  2. Step 2: Convert to fraction form
    402,795,480/621,986,704 = 621,986,704/x
  3. Step 3: Cross multiply
    402,795,480x = 621,986,704 × 621,986,704
  4. Step 4: Simplify right side
    402,795,480x = 386,867,459,952,783,616
  5. Step 5: Solve for x
    x = 386,867,459,952,783,616/402,795,480
  6. Step 6: Final answer
    x = 960,456,308.88

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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.