Home / 545,942.20-819,788.10-412,972.60

Finding the Fourth Proportional to 545,942.20, 819,788.10 and 412,972.60

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Solution

The fourth proportional to 545,942.20, 819,788.10 and 412,972.60 is: 620,120.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,942.20 : 819,788.10 = 412,972.60 : x
  2. Step 2: Convert to fraction form
    545,942.20/819,788.10 = 412,972.60/x
  3. Step 3: Cross multiply
    545,942.20x = 819,788.10 × 412,972.60
  4. Step 4: Simplify right side
    545,942.20x = 338,550,023,106.06
  5. Step 5: Solve for x
    x = 338,550,023,106.06/545,942.20
  6. Step 6: Final answer
    x = 620,120.63

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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.