Home / 724,342.10-1,086,513.15-191,945.30

Finding the Fourth Proportional to 724,342.10, 1,086,513.15 and 191,945.30

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Solution

The fourth proportional to 724,342.10, 1,086,513.15 and 191,945.30 is: 287,917.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,342.10 : 1,086,513.15 = 191,945.30 : x
  2. Step 2: Convert to fraction form
    724,342.10/1,086,513.15 = 191,945.30/x
  3. Step 3: Cross multiply
    724,342.10x = 1,086,513.15 × 191,945.30
  4. Step 4: Simplify right side
    724,342.10x = 208,551,092,530.70
  5. Step 5: Solve for x
    x = 208,551,092,530.70/724,342.10
  6. Step 6: Final answer
    x = 287,917.95

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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.