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Finding the Fourth Proportional to 576,078.64, 794,988.02 and 321,429.82

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Solution

The fourth proportional to 576,078.64, 794,988.02 and 321,429.82 is: 443,572.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,078.64 : 794,988.02 = 321,429.82 : x
  2. Step 2: Convert to fraction form
    576,078.64/794,988.02 = 321,429.82/x
  3. Step 3: Cross multiply
    576,078.64x = 794,988.02 × 321,429.82
  4. Step 4: Simplify right side
    576,078.64x = 255,532,856,170.76
  5. Step 5: Solve for x
    x = 255,532,856,170.76/576,078.64
  6. Step 6: Final answer
    x = 443,572.87

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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.