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Finding the Third Proportional to 428,074.50 and 922,374.50

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Solution

The third proportional to 428,074.50 and 922,374.50 is: 1,987,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,074.50 : 922,374.50 = 922,374.50 : x
  2. Step 2: Convert to fraction form
    428,074.50/922,374.50 = 922,374.50/x
  3. Step 3: Cross multiply
    428,074.50x = 922,374.50 × 922,374.50
  4. Step 4: Simplify right side
    428,074.50x = 850,774,718,250.25
  5. Step 5: Solve for x
    x = 850,774,718,250.25/428,074.50
  6. Step 6: Final answer
    x = 1,987,445.45

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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.