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Finding the Fourth Proportional to 703,467.20, 970,727.28 and 397,571.24

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Solution

The fourth proportional to 703,467.20, 970,727.28 and 397,571.24 is: 548,615.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,467.20 : 970,727.28 = 397,571.24 : x
  2. Step 2: Convert to fraction form
    703,467.20/970,727.28 = 397,571.24/x
  3. Step 3: Cross multiply
    703,467.20x = 970,727.28 × 397,571.24
  4. Step 4: Simplify right side
    703,467.20x = 385,933,248,411.43
  5. Step 5: Solve for x
    x = 385,933,248,411.43/703,467.20
  6. Step 6: Final answer
    x = 548,615.84

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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.