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Finding the Fourth Proportional to 641,216, 884,919.04 and 358,592

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Solution

The fourth proportional to 641,216, 884,919.04 and 358,592 is: 494,879.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,216 : 884,919.04 = 358,592 : x
  2. Step 2: Convert to fraction form
    641,216/884,919.04 = 358,592/x
  3. Step 3: Cross multiply
    641,216x = 884,919.04 × 358,592
  4. Step 4: Simplify right side
    641,216x = 317,324,888,391.68
  5. Step 5: Solve for x
    x = 317,324,888,391.68/641,216
  6. Step 6: Final answer
    x = 494,879.87

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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.