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Finding the Fourth Proportional to 777,066, 1,072,427.92 and 454,756.88

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Solution

The fourth proportional to 777,066, 1,072,427.92 and 454,756.88 is: 627,609.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,066 : 1,072,427.92 = 454,756.88 : x
  2. Step 2: Convert to fraction form
    777,066/1,072,427.92 = 454,756.88/x
  3. Step 3: Cross multiply
    777,066x = 1,072,427.92 × 454,756.88
  4. Step 4: Simplify right side
    777,066x = 487,693,974,924.09
  5. Step 5: Solve for x
    x = 487,693,974,924.09/777,066
  6. Step 6: Final answer
    x = 627,609.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.