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Finding the Third Proportional to 321,439,828 and 697,677,124

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Solution

The third proportional to 321,439,828 and 697,677,124 is: 1,514,290,784.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,439,828 : 697,677,124 = 697,677,124 : x
  2. Step 2: Convert to fraction form
    321,439,828/697,677,124 = 697,677,124/x
  3. Step 3: Cross multiply
    321,439,828x = 697,677,124 × 697,677,124
  4. Step 4: Simplify right side
    321,439,828x = 486,753,369,352,911,360
  5. Step 5: Solve for x
    x = 486,753,369,352,911,360/321,439,828
  6. Step 6: Final answer
    x = 1,514,290,784.63

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.