Home / 434,426.80-651,640.20-419,911.60

Finding the Fourth Proportional to 434,426.80, 651,640.20 and 419,911.60

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Solution

The fourth proportional to 434,426.80, 651,640.20 and 419,911.60 is: 629,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,426.80 : 651,640.20 = 419,911.60 : x
  2. Step 2: Convert to fraction form
    434,426.80/651,640.20 = 419,911.60/x
  3. Step 3: Cross multiply
    434,426.80x = 651,640.20 × 419,911.60
  4. Step 4: Simplify right side
    434,426.80x = 273,631,279,006.32
  5. Step 5: Solve for x
    x = 273,631,279,006.32/434,426.80
  6. Step 6: Final answer
    x = 629,867.40

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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.