Home / 809,612.80-1,212,475.20-434,809.60

Finding the Fourth Proportional to 809,612.80, 1,212,475.20 and 434,809.60

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Solution

The fourth proportional to 809,612.80, 1,212,475.20 and 434,809.60 is: 651,170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,612.80 : 1,212,475.20 = 434,809.60 : x
  2. Step 2: Convert to fraction form
    809,612.80/1,212,475.20 = 434,809.60/x
  3. Step 3: Cross multiply
    809,612.80x = 1,212,475.20 × 434,809.60
  4. Step 4: Simplify right side
    809,612.80x = 527,195,856,721.92
  5. Step 5: Solve for x
    x = 527,195,856,721.92/809,612.80
  6. Step 6: Final answer
    x = 651,170.36

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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.