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Finding the Fourth Proportional to 620,576.32, 930,390.88 and 320,865.56

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Solution

The fourth proportional to 620,576.32, 930,390.88 and 320,865.56 is: 481,053.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,576.32 : 930,390.88 = 320,865.56 : x
  2. Step 2: Convert to fraction form
    620,576.32/930,390.88 = 320,865.56/x
  3. Step 3: Cross multiply
    620,576.32x = 930,390.88 × 320,865.56
  4. Step 4: Simplify right side
    620,576.32x = 298,530,390,730.09
  5. Step 5: Solve for x
    x = 298,530,390,730.09/620,576.32
  6. Step 6: Final answer
    x = 481,053.47

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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.