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Finding the Third Proportional to 645,507 and 1,418,406.75

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Solution

The third proportional to 645,507 and 1,418,406.75 is: 3,116,740.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,507 : 1,418,406.75 = 1,418,406.75 : x
  2. Step 2: Convert to fraction form
    645,507/1,418,406.75 = 1,418,406.75/x
  3. Step 3: Cross multiply
    645,507x = 1,418,406.75 × 1,418,406.75
  4. Step 4: Simplify right side
    645,507x = 2,011,877,708,445.56
  5. Step 5: Solve for x
    x = 2,011,877,708,445.56/645,507
  6. Step 6: Final answer
    x = 3,116,740.34

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.