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Finding the Third Proportional to 402,795,892 and 621,987,312

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Solution

The third proportional to 402,795,892 and 621,987,312 is: 960,457,204.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,795,892 : 621,987,312 = 621,987,312 : x
  2. Step 2: Convert to fraction form
    402,795,892/621,987,312 = 621,987,312/x
  3. Step 3: Cross multiply
    402,795,892x = 621,987,312 × 621,987,312
  4. Step 4: Simplify right side
    402,795,892x = 386,868,216,288,985,344
  5. Step 5: Solve for x
    x = 386,868,216,288,985,344/402,795,892
  6. Step 6: Final answer
    x = 960,457,204.19

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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.