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Finding the Fourth Proportional to 520,393.74, 718,134 and 294,034.38

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Solution

The fourth proportional to 520,393.74, 718,134 and 294,034.38 is: 405,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,393.74 : 718,134 = 294,034.38 : x
  2. Step 2: Convert to fraction form
    520,393.74/718,134 = 294,034.38/x
  3. Step 3: Cross multiply
    520,393.74x = 718,134 × 294,034.38
  4. Step 4: Simplify right side
    520,393.74x = 211,156,085,446.92
  5. Step 5: Solve for x
    x = 211,156,085,446.92/520,393.74
  6. Step 6: Final answer
    x = 405,762.16

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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.