Home / 724,308.60-1,086,462.90-191,911.80

Finding the Fourth Proportional to 724,308.60, 1,086,462.90 and 191,911.80

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Solution

The fourth proportional to 724,308.60, 1,086,462.90 and 191,911.80 is: 287,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,308.60 : 1,086,462.90 = 191,911.80 : x
  2. Step 2: Convert to fraction form
    724,308.60/1,086,462.90 = 191,911.80/x
  3. Step 3: Cross multiply
    724,308.60x = 1,086,462.90 × 191,911.80
  4. Step 4: Simplify right side
    724,308.60x = 208,505,050,772.22
  5. Step 5: Solve for x
    x = 208,505,050,772.22/724,308.60
  6. Step 6: Final answer
    x = 287,867.70

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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.