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Finding the Fourth Proportional to 587,807.08, 881,960.28 and 321,256.21

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Solution

The fourth proportional to 587,807.08, 881,960.28 and 321,256.21 is: 482,020.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,807.08 : 881,960.28 = 321,256.21 : x
  2. Step 2: Convert to fraction form
    587,807.08/881,960.28 = 321,256.21/x
  3. Step 3: Cross multiply
    587,807.08x = 881,960.28 × 321,256.21
  4. Step 4: Simplify right side
    587,807.08x = 283,335,216,923.34
  5. Step 5: Solve for x
    x = 283,335,216,923.34/587,807.08
  6. Step 6: Final answer
    x = 482,020.76

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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.