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Finding the Fourth Proportional to 479,027.90, 660,894.12 and 307,084.74

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Solution

The fourth proportional to 479,027.90, 660,894.12 and 307,084.74 is: 423,671.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,027.90 : 660,894.12 = 307,084.74 : x
  2. Step 2: Convert to fraction form
    479,027.90/660,894.12 = 307,084.74/x
  3. Step 3: Cross multiply
    479,027.90x = 660,894.12 × 307,084.74
  4. Step 4: Simplify right side
    479,027.90x = 202,950,499,007.73
  5. Step 5: Solve for x
    x = 202,950,499,007.73/479,027.90
  6. Step 6: Final answer
    x = 423,671.56

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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.