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Finding the Fourth Proportional to 520,344, 718,079.04 and 281,880

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Solution

The fourth proportional to 520,344, 718,079.04 and 281,880 is: 388,996.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,344 : 718,079.04 = 281,880 : x
  2. Step 2: Convert to fraction form
    520,344/718,079.04 = 281,880/x
  3. Step 3: Cross multiply
    520,344x = 718,079.04 × 281,880
  4. Step 4: Simplify right side
    520,344x = 202,412,119,795.20
  5. Step 5: Solve for x
    x = 202,412,119,795.20/520,344
  6. Step 6: Final answer
    x = 388,996.74

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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.