Home / 376,899,623.06-520,114,021.22-209,632,286.21

Finding the Fourth Proportional to 376,899,623.06, 520,114,021.22 and 209,632,286.21

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Solution

The fourth proportional to 376,899,623.06, 520,114,021.22 and 209,632,286.21 is: 289,288,406.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,899,623.06 : 520,114,021.22 = 209,632,286.21 : x
  2. Step 2: Convert to fraction form
    376,899,623.06/520,114,021.22 = 209,632,286.21/x
  3. Step 3: Cross multiply
    376,899,623.06x = 520,114,021.22 × 209,632,286.21
  4. Step 4: Simplify right side
    376,899,623.06x = 109,032,691,354,576,320
  5. Step 5: Solve for x
    x = 109,032,691,354,576,320/376,899,623.06
  6. Step 6: Final answer
    x = 289,288,406.47

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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.