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Finding the Fourth Proportional to 578,972.80, 868,612.80 and 204,956.80

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Solution

The fourth proportional to 578,972.80, 868,612.80 and 204,956.80 is: 307,489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,972.80 : 868,612.80 = 204,956.80 : x
  2. Step 2: Convert to fraction form
    578,972.80/868,612.80 = 204,956.80/x
  3. Step 3: Cross multiply
    578,972.80x = 868,612.80 × 204,956.80
  4. Step 4: Simplify right side
    578,972.80x = 178,028,099,927.04
  5. Step 5: Solve for x
    x = 178,028,099,927.04/578,972.80
  6. Step 6: Final answer
    x = 307,489.57

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1.5x scale

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.