Home / 446,933.60-670,400.40-257,976.80

Finding the Fourth Proportional to 446,933.60, 670,400.40 and 257,976.80

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Solution

The fourth proportional to 446,933.60, 670,400.40 and 257,976.80 is: 386,965.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,933.60 : 670,400.40 = 257,976.80 : x
  2. Step 2: Convert to fraction form
    446,933.60/670,400.40 = 257,976.80/x
  3. Step 3: Cross multiply
    446,933.60x = 670,400.40 × 257,976.80
  4. Step 4: Simplify right side
    446,933.60x = 172,947,749,910.72
  5. Step 5: Solve for x
    x = 172,947,749,910.72/446,933.60
  6. Step 6: Final answer
    x = 386,965.20

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Double scale
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Similar ratio
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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.