Home / 859,138.72-1,185,571.20-477,188.80

Finding the Fourth Proportional to 859,138.72, 1,185,571.20 and 477,188.80

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Solution

The fourth proportional to 859,138.72, 1,185,571.20 and 477,188.80 is: 658,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,138.72 : 1,185,571.20 = 477,188.80 : x
  2. Step 2: Convert to fraction form
    859,138.72/1,185,571.20 = 477,188.80/x
  3. Step 3: Cross multiply
    859,138.72x = 1,185,571.20 × 477,188.80
  4. Step 4: Simplify right side
    859,138.72x = 565,741,298,242.56
  5. Step 5: Solve for x
    x = 565,741,298,242.56/859,138.72
  6. Step 6: Final answer
    x = 658,498.20

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Double scale
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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.