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Finding the Third Proportional to 2,128,475.81 and 3,189,597.19

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Solution

The third proportional to 2,128,475.81 and 3,189,597.19 is: 4,779,725.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,475.81 : 3,189,597.19 = 3,189,597.19 : x
  2. Step 2: Convert to fraction form
    2,128,475.81/3,189,597.19 = 3,189,597.19/x
  3. Step 3: Cross multiply
    2,128,475.81x = 3,189,597.19 × 3,189,597.19
  4. Step 4: Simplify right side
    2,128,475.81x = 10,173,530,218,507.91
  5. Step 5: Solve for x
    x = 10,173,530,218,507.91/2,128,475.81
  6. Step 6: Final answer
    x = 4,779,725.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.