Home / 638,828.80-958,243.20-218,041.60

Finding the Fourth Proportional to 638,828.80, 958,243.20 and 218,041.60

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Solution

The fourth proportional to 638,828.80, 958,243.20 and 218,041.60 is: 327,062.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,828.80 : 958,243.20 = 218,041.60 : x
  2. Step 2: Convert to fraction form
    638,828.80/958,243.20 = 218,041.60/x
  3. Step 3: Cross multiply
    638,828.80x = 958,243.20 × 218,041.60
  4. Step 4: Simplify right side
    638,828.80x = 208,936,880,517.12
  5. Step 5: Solve for x
    x = 208,936,880,517.12/638,828.80
  6. Step 6: Final answer
    x = 327,062.40

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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.