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Finding the Fourth Proportional to 578,376.60, 866,981.70 and 263,059.80

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Solution

The fourth proportional to 578,376.60, 866,981.70 and 263,059.80 is: 394,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,376.60 : 866,981.70 = 263,059.80 : x
  2. Step 2: Convert to fraction form
    578,376.60/866,981.70 = 263,059.80/x
  3. Step 3: Cross multiply
    578,376.60x = 866,981.70 × 263,059.80
  4. Step 4: Simplify right side
    578,376.60x = 228,068,032,605.66
  5. Step 5: Solve for x
    x = 228,068,032,605.66/578,376.60
  6. Step 6: Final answer
    x = 394,324.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.