Home / 1,190,057.78-1,785,144.06-391,321.64

Finding the Fourth Proportional to 1,190,057.78, 1,785,144.06 and 391,321.64

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Solution

The fourth proportional to 1,190,057.78, 1,785,144.06 and 391,321.64 is: 587,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,057.78 : 1,785,144.06 = 391,321.64 : x
  2. Step 2: Convert to fraction form
    1,190,057.78/1,785,144.06 = 391,321.64/x
  3. Step 3: Cross multiply
    1,190,057.78x = 1,785,144.06 × 391,321.64
  4. Step 4: Simplify right side
    1,190,057.78x = 698,565,501,195.46
  5. Step 5: Solve for x
    x = 698,565,501,195.46/1,190,057.78
  6. Step 6: Final answer
    x = 587,001.33

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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.