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Finding the Third Proportional to 287,891,431.88 and 621,657,034.88

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Solution

The third proportional to 287,891,431.88 and 621,657,034.88 is: 1,342,372,249.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,891,431.88 : 621,657,034.88 = 621,657,034.88 : x
  2. Step 2: Convert to fraction form
    287,891,431.88/621,657,034.88 = 621,657,034.88/x
  3. Step 3: Cross multiply
    287,891,431.88x = 621,657,034.88 × 621,657,034.88
  4. Step 4: Simplify right side
    287,891,431.88x = 386,457,469,009,576,960
  5. Step 5: Solve for x
    x = 386,457,469,009,576,960/287,891,431.88
  6. Step 6: Final answer
    x = 1,342,372,249.47

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.