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Finding the Third Proportional to 402,795,340 and 621,986,446

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Solution

The third proportional to 402,795,340 and 621,986,446 is: 960,455,845.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,795,340 : 621,986,446 = 621,986,446 : x
  2. Step 2: Convert to fraction form
    402,795,340/621,986,446 = 621,986,446/x
  3. Step 3: Cross multiply
    402,795,340x = 621,986,446 × 621,986,446
  4. Step 4: Simplify right side
    402,795,340x = 386,867,139,007,710,912
  5. Step 5: Solve for x
    x = 386,867,139,007,710,912/402,795,340
  6. Step 6: Final answer
    x = 960,455,845.91

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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.