Home / 979,871.20-1,469,234.70-380,131.60

Finding the Fourth Proportional to 979,871.20, 1,469,234.70 and 380,131.60

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Solution

The fourth proportional to 979,871.20, 1,469,234.70 and 380,131.60 is: 569,975.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,871.20 : 1,469,234.70 = 380,131.60 : x
  2. Step 2: Convert to fraction form
    979,871.20/1,469,234.70 = 380,131.60/x
  3. Step 3: Cross multiply
    979,871.20x = 1,469,234.70 × 380,131.60
  4. Step 4: Simplify right side
    979,871.20x = 558,502,537,286.52
  5. Step 5: Solve for x
    x = 558,502,537,286.52/979,871.20
  6. Step 6: Final answer
    x = 569,975.46

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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.