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Finding the Fourth Proportional to 587,789.28, 810,398.32 and 380,691.84

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Solution

The fourth proportional to 587,789.28, 810,398.32 and 380,691.84 is: 524,868.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,789.28 : 810,398.32 = 380,691.84 : x
  2. Step 2: Convert to fraction form
    587,789.28/810,398.32 = 380,691.84/x
  3. Step 3: Cross multiply
    587,789.28x = 810,398.32 × 380,691.84
  4. Step 4: Simplify right side
    587,789.28x = 308,512,027,573.71
  5. Step 5: Solve for x
    x = 308,512,027,573.71/587,789.28
  6. Step 6: Final answer
    x = 524,868.41

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1.5x scale

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.