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Finding the Fourth Proportional to 548,843.90, 821,710.65 and 492,856.70

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Solution

The fourth proportional to 548,843.90, 821,710.65 and 492,856.70 is: 737,888.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,843.90 : 821,710.65 = 492,856.70 : x
  2. Step 2: Convert to fraction form
    548,843.90/821,710.65 = 492,856.70/x
  3. Step 3: Cross multiply
    548,843.90x = 821,710.65 × 492,856.70
  4. Step 4: Simplify right side
    548,843.90x = 404,985,599,313.86
  5. Step 5: Solve for x
    x = 404,985,599,313.86/548,843.90
  6. Step 6: Final answer
    x = 737,888.49

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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.