Home / 691,809.20-1,037,713.80-218,542.40

Finding the Fourth Proportional to 691,809.20, 1,037,713.80 and 218,542.40

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Solution

The fourth proportional to 691,809.20, 1,037,713.80 and 218,542.40 is: 327,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,809.20 : 1,037,713.80 = 218,542.40 : x
  2. Step 2: Convert to fraction form
    691,809.20/1,037,713.80 = 218,542.40/x
  3. Step 3: Cross multiply
    691,809.20x = 1,037,713.80 × 218,542.40
  4. Step 4: Simplify right side
    691,809.20x = 226,784,464,365.12
  5. Step 5: Solve for x
    x = 226,784,464,365.12/691,809.20
  6. Step 6: Final answer
    x = 327,813.60

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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.