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Finding the Third Proportional to 1,242,897.75 and 1,919,293.88

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Solution

The third proportional to 1,242,897.75 and 1,919,293.88 is: 2,963,790.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,897.75 : 1,919,293.88 = 1,919,293.88 : x
  2. Step 2: Convert to fraction form
    1,242,897.75/1,919,293.88 = 1,919,293.88/x
  3. Step 3: Cross multiply
    1,242,897.75x = 1,919,293.88 × 1,919,293.88
  4. Step 4: Simplify right side
    1,242,897.75x = 3,683,688,978,612.52
  5. Step 5: Solve for x
    x = 3,683,688,978,612.52/1,242,897.75
  6. Step 6: Final answer
    x = 2,963,790.85

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.