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Finding the Third Proportional to 640,840,331 and 1,315,653,520

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Solution

The third proportional to 640,840,331 and 1,315,653,520 is: 2,701,053,758.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,840,331 : 1,315,653,520 = 1,315,653,520 : x
  2. Step 2: Convert to fraction form
    640,840,331/1,315,653,520 = 1,315,653,520/x
  3. Step 3: Cross multiply
    640,840,331x = 1,315,653,520 × 1,315,653,520
  4. Step 4: Simplify right side
    640,840,331x = 1,730,944,184,688,390,400
  5. Step 5: Solve for x
    x = 1,730,944,184,688,390,400/640,840,331
  6. Step 6: Final answer
    x = 2,701,053,758.57

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.