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Finding the Fourth Proportional to 522,180.80, 782,104.80 and 428,868.80

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Solution

The fourth proportional to 522,180.80, 782,104.80 and 428,868.80 is: 642,345.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,180.80 : 782,104.80 = 428,868.80 : x
  2. Step 2: Convert to fraction form
    522,180.80/782,104.80 = 428,868.80/x
  3. Step 3: Cross multiply
    522,180.80x = 782,104.80 × 428,868.80
  4. Step 4: Simplify right side
    522,180.80x = 335,420,347,050.24
  5. Step 5: Solve for x
    x = 335,420,347,050.24/522,180.80
  6. Step 6: Final answer
    x = 642,345.23

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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.