Home / 456,986.80-685,480.20-157,440.70

Finding the Fourth Proportional to 456,986.80, 685,480.20 and 157,440.70

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Solution

The fourth proportional to 456,986.80, 685,480.20 and 157,440.70 is: 236,161.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,986.80 : 685,480.20 = 157,440.70 : x
  2. Step 2: Convert to fraction form
    456,986.80/685,480.20 = 157,440.70/x
  3. Step 3: Cross multiply
    456,986.80x = 685,480.20 × 157,440.70
  4. Step 4: Simplify right side
    456,986.80x = 107,922,482,524.14
  5. Step 5: Solve for x
    x = 107,922,482,524.14/456,986.80
  6. Step 6: Final answer
    x = 236,161.05

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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.