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Finding the Fourth Proportional to 568,729, 785,074.98 and 387,623.94

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Solution

The fourth proportional to 568,729, 785,074.98 and 387,623.94 is: 535,077.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,729 : 785,074.98 = 387,623.94 : x
  2. Step 2: Convert to fraction form
    568,729/785,074.98 = 387,623.94/x
  3. Step 3: Cross multiply
    568,729x = 785,074.98 × 387,623.94
  4. Step 4: Simplify right side
    568,729x = 304,313,856,943.02
  5. Step 5: Solve for x
    x = 304,313,856,943.02/568,729
  6. Step 6: Final answer
    x = 535,077.09

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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.