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Finding the Fourth Proportional to 669,399.63, 923,641.58 and 397,552.80

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Solution

The fourth proportional to 669,399.63, 923,641.58 and 397,552.80 is: 548,545.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,399.63 : 923,641.58 = 397,552.80 : x
  2. Step 2: Convert to fraction form
    669,399.63/923,641.58 = 397,552.80/x
  3. Step 3: Cross multiply
    669,399.63x = 923,641.58 × 397,552.80
  4. Step 4: Simplify right side
    669,399.63x = 367,196,296,325.42
  5. Step 5: Solve for x
    x = 367,196,296,325.42/669,399.63
  6. Step 6: Final answer
    x = 548,545.71

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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.