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Finding the Fourth Proportional to 500,590.06, 690,879.99 and 285,680.86

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Solution

The fourth proportional to 500,590.06, 690,879.99 and 285,680.86 is: 394,277.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,590.06 : 690,879.99 = 285,680.86 : x
  2. Step 2: Convert to fraction form
    500,590.06/690,879.99 = 285,680.86/x
  3. Step 3: Cross multiply
    500,590.06x = 690,879.99 × 285,680.86
  4. Step 4: Simplify right side
    500,590.06x = 197,371,189,699.99
  5. Step 5: Solve for x
    x = 197,371,189,699.99/500,590.06
  6. Step 6: Final answer
    x = 394,277.09

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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.