Home / 687,902.44-949,332.64-397,504.36

Finding the Fourth Proportional to 687,902.44, 949,332.64 and 397,504.36

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Solution

The fourth proportional to 687,902.44, 949,332.64 and 397,504.36 is: 548,571.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,902.44 : 949,332.64 = 397,504.36 : x
  2. Step 2: Convert to fraction form
    687,902.44/949,332.64 = 397,504.36/x
  3. Step 3: Cross multiply
    687,902.44x = 949,332.64 × 397,504.36
  4. Step 4: Simplify right side
    687,902.44x = 377,363,858,743.65
  5. Step 5: Solve for x
    x = 377,363,858,743.65/687,902.44
  6. Step 6: Final answer
    x = 548,571.77

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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.