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Finding the Fourth Proportional to 520,081.34, 779,684.25 and 253,704.38

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Solution

The fourth proportional to 520,081.34, 779,684.25 and 253,704.38 is: 380,343.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,081.34 : 779,684.25 = 253,704.38 : x
  2. Step 2: Convert to fraction form
    520,081.34/779,684.25 = 253,704.38/x
  3. Step 3: Cross multiply
    520,081.34x = 779,684.25 × 253,704.38
  4. Step 4: Simplify right side
    520,081.34x = 197,809,309,242.02
  5. Step 5: Solve for x
    x = 197,809,309,242.02/520,081.34
  6. Step 6: Final answer
    x = 380,343.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.