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Finding the Third Proportional to 1,239,728.72 and 1,878,305.34

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Solution

The third proportional to 1,239,728.72 and 1,878,305.34 is: 2,845,808.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,728.72 : 1,878,305.34 = 1,878,305.34 : x
  2. Step 2: Convert to fraction form
    1,239,728.72/1,878,305.34 = 1,878,305.34/x
  3. Step 3: Cross multiply
    1,239,728.72x = 1,878,305.34 × 1,878,305.34
  4. Step 4: Simplify right side
    1,239,728.72x = 3,528,030,964,359.81
  5. Step 5: Solve for x
    x = 3,528,030,964,359.81/1,239,728.72
  6. Step 6: Final answer
    x = 2,845,808.85

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.