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Finding the Fourth Proportional to 548,071.20, 821,329.20 and 404,798.40

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Solution

The fourth proportional to 548,071.20, 821,329.20 and 404,798.40 is: 606,623.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,071.20 : 821,329.20 = 404,798.40 : x
  2. Step 2: Convert to fraction form
    548,071.20/821,329.20 = 404,798.40/x
  3. Step 3: Cross multiply
    548,071.20x = 821,329.20 × 404,798.40
  4. Step 4: Simplify right side
    548,071.20x = 332,472,746,033.28
  5. Step 5: Solve for x
    x = 332,472,746,033.28/548,071.20
  6. Step 6: Final answer
    x = 606,623.27

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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.