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Finding the Fourth Proportional to 723,792.28, 998,415.42 and 451,387.36

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Solution

The fourth proportional to 723,792.28, 998,415.42 and 451,387.36 is: 622,653.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,792.28 : 998,415.42 = 451,387.36 : x
  2. Step 2: Convert to fraction form
    723,792.28/998,415.42 = 451,387.36/x
  3. Step 3: Cross multiply
    723,792.28x = 998,415.42 × 451,387.36
  4. Step 4: Simplify right side
    723,792.28x = 450,672,100,617.09
  5. Step 5: Solve for x
    x = 450,672,100,617.09/723,792.28
  6. Step 6: Final answer
    x = 622,653.92

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1.5x scale

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.