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Finding the Third Proportional to 390,060.75 and 839,168.25

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Solution

The third proportional to 390,060.75 and 839,168.25 is: 1,805,368.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,060.75 : 839,168.25 = 839,168.25 : x
  2. Step 2: Convert to fraction form
    390,060.75/839,168.25 = 839,168.25/x
  3. Step 3: Cross multiply
    390,060.75x = 839,168.25 × 839,168.25
  4. Step 4: Simplify right side
    390,060.75x = 704,203,351,808.06
  5. Step 5: Solve for x
    x = 704,203,351,808.06/390,060.75
  6. Step 6: Final answer
    x = 1,805,368.40

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.