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Finding the Third Proportional to 438,988,779 and 630,980,869

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Solution

The third proportional to 438,988,779 and 630,980,869 is: 906,940,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,988,779 : 630,980,869 = 630,980,869 : x
  2. Step 2: Convert to fraction form
    438,988,779/630,980,869 = 630,980,869/x
  3. Step 3: Cross multiply
    438,988,779x = 630,980,869 × 630,980,869
  4. Step 4: Simplify right side
    438,988,779x = 398,136,857,043,995,136
  5. Step 5: Solve for x
    x = 398,136,857,043,995,136/438,988,779
  6. Step 6: Final answer
    x = 906,940,851.54

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.