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Finding the Fourth Proportional to 719,361.18, 992,718.48 and 397,071.36

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Solution

The fourth proportional to 719,361.18, 992,718.48 and 397,071.36 is: 547,958.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,361.18 : 992,718.48 = 397,071.36 : x
  2. Step 2: Convert to fraction form
    719,361.18/992,718.48 = 397,071.36/x
  3. Step 3: Cross multiply
    719,361.18x = 992,718.48 × 397,071.36
  4. Step 4: Simplify right side
    719,361.18x = 394,180,076,950.73
  5. Step 5: Solve for x
    x = 394,180,076,950.73/719,361.18
  6. Step 6: Final answer
    x = 547,958.51

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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.