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Finding the Fourth Proportional to 508,418.70, 701,639.78 and 304,502.82

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Solution

The fourth proportional to 508,418.70, 701,639.78 and 304,502.82 is: 420,227.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,418.70 : 701,639.78 = 304,502.82 : x
  2. Step 2: Convert to fraction form
    508,418.70/701,639.78 = 304,502.82/x
  3. Step 3: Cross multiply
    508,418.70x = 701,639.78 × 304,502.82
  4. Step 4: Simplify right side
    508,418.70x = 213,651,291,634.18
  5. Step 5: Solve for x
    x = 213,651,291,634.18/508,418.70
  6. Step 6: Final answer
    x = 420,227.05

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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.