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Finding the Third Proportional to 287,895,345 and 621,664,338

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Solution

The third proportional to 287,895,345 and 621,664,338 is: 1,342,385,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,895,345 : 621,664,338 = 621,664,338 : x
  2. Step 2: Convert to fraction form
    287,895,345/621,664,338 = 621,664,338/x
  3. Step 3: Cross multiply
    287,895,345x = 621,664,338 × 621,664,338
  4. Step 4: Simplify right side
    287,895,345x = 386,466,549,140,978,240
  5. Step 5: Solve for x
    x = 386,466,549,140,978,240/287,895,345
  6. Step 6: Final answer
    x = 1,342,385,543.40

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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.