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Finding the Fourth Proportional to 548,352.80, 821,362.80 and 455,040.80

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Solution

The fourth proportional to 548,352.80, 821,362.80 and 455,040.80 is: 681,593.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,352.80 : 821,362.80 = 455,040.80 : x
  2. Step 2: Convert to fraction form
    548,352.80/821,362.80 = 455,040.80/x
  3. Step 3: Cross multiply
    548,352.80x = 821,362.80 × 455,040.80
  4. Step 4: Simplify right side
    548,352.80x = 373,753,585,602.24
  5. Step 5: Solve for x
    x = 373,753,585,602.24/548,352.80
  6. Step 6: Final answer
    x = 681,593.28

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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.