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Finding the Fourth Proportional to 568,039.43, 783,754.28 and 347,220.17

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Solution

The fourth proportional to 568,039.43, 783,754.28 and 347,220.17 is: 479,078.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,039.43 : 783,754.28 = 347,220.17 : x
  2. Step 2: Convert to fraction form
    568,039.43/783,754.28 = 347,220.17/x
  3. Step 3: Cross multiply
    568,039.43x = 783,754.28 × 347,220.17
  4. Step 4: Simplify right side
    568,039.43x = 272,135,292,926.11
  5. Step 5: Solve for x
    x = 272,135,292,926.11/568,039.43
  6. Step 6: Final answer
    x = 479,078.17

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1.5x scale

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.