Home / 669,369.50-923,636.94-393,739.86

Finding the Fourth Proportional to 669,369.50, 923,636.94 and 393,739.86

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Solution

The fourth proportional to 669,369.50, 923,636.94 and 393,739.86 is: 543,306.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,369.50 : 923,636.94 = 393,739.86 : x
  2. Step 2: Convert to fraction form
    669,369.50/923,636.94 = 393,739.86/x
  3. Step 3: Cross multiply
    669,369.50x = 923,636.94 × 393,739.86
  4. Step 4: Simplify right side
    669,369.50x = 363,672,679,446.43
  5. Step 5: Solve for x
    x = 363,672,679,446.43/669,369.50
  6. Step 6: Final answer
    x = 543,306.32

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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.