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Finding the Third Proportional to 402,795,028 and 621,985,988

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Solution

The third proportional to 402,795,028 and 621,985,988 is: 960,455,175.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,795,028 : 621,985,988 = 621,985,988 : x
  2. Step 2: Convert to fraction form
    402,795,028/621,985,988 = 621,985,988/x
  3. Step 3: Cross multiply
    402,795,028x = 621,985,988 × 621,985,988
  4. Step 4: Simplify right side
    402,795,028x = 386,866,569,268,336,128
  5. Step 5: Solve for x
    x = 386,866,569,268,336,128/402,795,028
  6. Step 6: Final answer
    x = 960,455,175.40

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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.