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Finding the Fourth Proportional to 568,909.58, 785,097.90 and 310,790.12

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Solution

The fourth proportional to 568,909.58, 785,097.90 and 310,790.12 is: 428,891.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,909.58 : 785,097.90 = 310,790.12 : x
  2. Step 2: Convert to fraction form
    568,909.58/785,097.90 = 310,790.12/x
  3. Step 3: Cross multiply
    568,909.58x = 785,097.90 × 310,790.12
  4. Step 4: Simplify right side
    568,909.58x = 244,000,666,627.26
  5. Step 5: Solve for x
    x = 244,000,666,627.26/568,909.58
  6. Step 6: Final answer
    x = 428,891.83

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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.