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Finding the Third Proportional to 287,895,330 and 621,664,308

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Solution

The third proportional to 287,895,330 and 621,664,308 is: 1,342,385,483.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,895,330 : 621,664,308 = 621,664,308 : x
  2. Step 2: Convert to fraction form
    287,895,330/621,664,308 = 621,664,308/x
  3. Step 3: Cross multiply
    287,895,330x = 621,664,308 × 621,664,308
  4. Step 4: Simplify right side
    287,895,330x = 386,466,511,841,118,848
  5. Step 5: Solve for x
    x = 386,466,511,841,118,848/287,895,330
  6. Step 6: Final answer
    x = 1,342,385,483.78

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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.