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Finding the Third Proportional to 390,444.75 and 850,144.50

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Solution

The third proportional to 390,444.75 and 850,144.50 is: 1,851,083.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,444.75 : 850,144.50 = 850,144.50 : x
  2. Step 2: Convert to fraction form
    390,444.75/850,144.50 = 850,144.50/x
  3. Step 3: Cross multiply
    390,444.75x = 850,144.50 × 850,144.50
  4. Step 4: Simplify right side
    390,444.75x = 722,745,670,880.25
  5. Step 5: Solve for x
    x = 722,745,670,880.25/390,444.75
  6. Step 6: Final answer
    x = 1,851,083.08

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.