Home / 717,236.33-989,786.14-394,945.66

Finding the Fourth Proportional to 717,236.33, 989,786.14 and 394,945.66

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Solution

The fourth proportional to 717,236.33, 989,786.14 and 394,945.66 is: 545,025.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,236.33 : 989,786.14 = 394,945.66 : x
  2. Step 2: Convert to fraction form
    717,236.33/989,786.14 = 394,945.66/x
  3. Step 3: Cross multiply
    717,236.33x = 989,786.14 × 394,945.66
  4. Step 4: Simplify right side
    717,236.33x = 390,911,739,456.83
  5. Step 5: Solve for x
    x = 390,911,739,456.83/717,236.33
  6. Step 6: Final answer
    x = 545,025.01

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.