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Finding the Third Proportional to 12,321,220 and 19,153,779

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Solution

The third proportional to 12,321,220 and 19,153,779 is: 29,775,237.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321,220 : 19,153,779 = 19,153,779 : x
  2. Step 2: Convert to fraction form
    12,321,220/19,153,779 = 19,153,779/x
  3. Step 3: Cross multiply
    12,321,220x = 19,153,779 × 19,153,779
  4. Step 4: Simplify right side
    12,321,220x = 366,867,249,980,841
  5. Step 5: Solve for x
    x = 366,867,249,980,841/12,321,220
  6. Step 6: Final answer
    x = 29,775,237.35

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.