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Finding the Fourth Proportional to 556,955.92, 768,535.14 and 311,906.44

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Solution

The fourth proportional to 556,955.92, 768,535.14 and 311,906.44 is: 430,395.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,955.92 : 768,535.14 = 311,906.44 : x
  2. Step 2: Convert to fraction form
    556,955.92/768,535.14 = 311,906.44/x
  3. Step 3: Cross multiply
    556,955.92x = 768,535.14 × 311,906.44
  4. Step 4: Simplify right side
    556,955.92x = 239,711,059,532.30
  5. Step 5: Solve for x
    x = 239,711,059,532.30/556,955.92
  6. Step 6: Final answer
    x = 430,395.03

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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.