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Finding the Fourth Proportional to 568,884.06, 785,042.15 and 310,756.86

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Solution

The fourth proportional to 568,884.06, 785,042.15 and 310,756.86 is: 428,834.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,884.06 : 785,042.15 = 310,756.86 : x
  2. Step 2: Convert to fraction form
    568,884.06/785,042.15 = 310,756.86/x
  3. Step 3: Cross multiply
    568,884.06x = 785,042.15 × 310,756.86
  4. Step 4: Simplify right side
    568,884.06x = 243,957,231,947.87
  5. Step 5: Solve for x
    x = 243,957,231,947.87/568,884.06
  6. Step 6: Final answer
    x = 428,834.71

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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.