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Finding the Fourth Proportional to 548,830.40, 821,690.40 and 492,843.20

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Solution

The fourth proportional to 548,830.40, 821,690.40 and 492,843.20 is: 737,868.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,830.40 : 821,690.40 = 492,843.20 : x
  2. Step 2: Convert to fraction form
    548,830.40/821,690.40 = 492,843.20/x
  3. Step 3: Cross multiply
    548,830.40x = 821,690.40 × 492,843.20
  4. Step 4: Simplify right side
    548,830.40x = 404,964,526,145.28
  5. Step 5: Solve for x
    x = 404,964,526,145.28/548,830.40
  6. Step 6: Final answer
    x = 737,868.25

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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.