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Finding the Fourth Proportional to 548,055.20, 821,305.20 and 404,782.40

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Solution

The fourth proportional to 548,055.20, 821,305.20 and 404,782.40 is: 606,599.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,055.20 : 821,305.20 = 404,782.40 : x
  2. Step 2: Convert to fraction form
    548,055.20/821,305.20 = 404,782.40/x
  3. Step 3: Cross multiply
    548,055.20x = 821,305.20 × 404,782.40
  4. Step 4: Simplify right side
    548,055.20x = 332,449,889,988.48
  5. Step 5: Solve for x
    x = 332,449,889,988.48/548,055.20
  6. Step 6: Final answer
    x = 606,599.28

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1.5x scale

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.