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Finding the Fourth Proportional to 545,040.20, 763,843.60 and 545,040.20

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Solution

The fourth proportional to 545,040.20, 763,843.60 and 545,040.20 is: 763,843.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,040.20 : 763,843.60 = 545,040.20 : x
  2. Step 2: Convert to fraction form
    545,040.20/763,843.60 = 545,040.20/x
  3. Step 3: Cross multiply
    545,040.20x = 763,843.60 × 545,040.20
  4. Step 4: Simplify right side
    545,040.20x = 416,325,468,512.72
  5. Step 5: Solve for x
    x = 416,325,468,512.72/545,040.20
  6. Step 6: Final answer
    x = 763,843.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.