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Finding the Fourth Proportional to 609,496.91, 910,538.76 and 394,513.39

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Solution

The fourth proportional to 609,496.91, 910,538.76 and 394,513.39 is: 589,370.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,496.91 : 910,538.76 = 394,513.39 : x
  2. Step 2: Convert to fraction form
    609,496.91/910,538.76 = 394,513.39/x
  3. Step 3: Cross multiply
    609,496.91x = 910,538.76 × 394,513.39
  4. Step 4: Simplify right side
    609,496.91x = 359,219,732,934.00
  5. Step 5: Solve for x
    x = 359,219,732,934.00/609,496.91
  6. Step 6: Final answer
    x = 589,370.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.