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Finding the Fourth Proportional to 669,597.42, 923,900.68 and 397,756.97

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Solution

The fourth proportional to 669,597.42, 923,900.68 and 397,756.97 is: 548,819.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,597.42 : 923,900.68 = 397,756.97 : x
  2. Step 2: Convert to fraction form
    669,597.42/923,900.68 = 397,756.97/x
  3. Step 3: Cross multiply
    669,597.42x = 923,900.68 × 397,756.97
  4. Step 4: Simplify right side
    669,597.42x = 367,487,929,443.84
  5. Step 5: Solve for x
    x = 367,487,929,443.84/669,597.42
  6. Step 6: Final answer
    x = 548,819.21

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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.