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Finding the Fourth Proportional to 496,446.64, 685,108.20 and 281,601.20

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Solution

The fourth proportional to 496,446.64, 685,108.20 and 281,601.20 is: 388,616.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,446.64 : 685,108.20 = 281,601.20 : x
  2. Step 2: Convert to fraction form
    496,446.64/685,108.20 = 281,601.20/x
  3. Step 3: Cross multiply
    496,446.64x = 685,108.20 × 281,601.20
  4. Step 4: Simplify right side
    496,446.64x = 192,927,291,249.84
  5. Step 5: Solve for x
    x = 192,927,291,249.84/496,446.64
  6. Step 6: Final answer
    x = 388,616.37

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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.