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Finding the Fourth Proportional to 520,084.13, 717,716.09 and 281,620.13

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Solution

The fourth proportional to 520,084.13, 717,716.09 and 281,620.13 is: 388,635.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,084.13 : 717,716.09 = 281,620.13 : x
  2. Step 2: Convert to fraction form
    520,084.13/717,716.09 = 281,620.13/x
  3. Step 3: Cross multiply
    520,084.13x = 717,716.09 × 281,620.13
  4. Step 4: Simplify right side
    520,084.13x = 202,123,295,684.36
  5. Step 5: Solve for x
    x = 202,123,295,684.36/520,084.13
  6. Step 6: Final answer
    x = 388,635.77

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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.