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Finding the Fourth Proportional to 719,465.70, 992,870.70 and 397,175.96

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Solution

The fourth proportional to 719,465.70, 992,870.70 and 397,175.96 is: 548,107.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,465.70 : 992,870.70 = 397,175.96 : x
  2. Step 2: Convert to fraction form
    719,465.70/992,870.70 = 397,175.96/x
  3. Step 3: Cross multiply
    719,465.70x = 992,870.70 × 397,175.96
  4. Step 4: Simplify right side
    719,465.70x = 394,344,373,428.37
  5. Step 5: Solve for x
    x = 394,344,373,428.37/719,465.70
  6. Step 6: Final answer
    x = 548,107.26

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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.