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Finding the Fourth Proportional to 568,879.55, 785,035.95 and 310,752.35

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Solution

The fourth proportional to 568,879.55, 785,035.95 and 310,752.35 is: 428,828.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,879.55 : 785,035.95 = 310,752.35 : x
  2. Step 2: Convert to fraction form
    568,879.55/785,035.95 = 310,752.35/x
  3. Step 3: Cross multiply
    568,879.55x = 785,035.95 × 310,752.35
  4. Step 4: Simplify right side
    568,879.55x = 243,951,765,898.35
  5. Step 5: Solve for x
    x = 243,951,765,898.35/568,879.55
  6. Step 6: Final answer
    x = 428,828.50

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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.