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Finding the Fourth Proportional to 588,889.72, 812,687.79 and 330,812.20

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Solution

The fourth proportional to 588,889.72, 812,687.79 and 330,812.20 is: 456,532.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    588,889.72 : 812,687.79 = 330,812.20 : x
  2. Step 2: Convert to fraction form
    588,889.72/812,687.79 = 330,812.20/x
  3. Step 3: Cross multiply
    588,889.72x = 812,687.79 × 330,812.20
  4. Step 4: Simplify right side
    588,889.72x = 268,847,035,723.04
  5. Step 5: Solve for x
    x = 268,847,035,723.04/588,889.72
  6. Step 6: Final answer
    x = 456,532.06

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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.