Home / 846,147.20-1,269,220.80-285,123.20

Finding the Fourth Proportional to 846,147.20, 1,269,220.80 and 285,123.20

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Solution

The fourth proportional to 846,147.20, 1,269,220.80 and 285,123.20 is: 427,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    846,147.20 : 1,269,220.80 = 285,123.20 : x
  2. Step 2: Convert to fraction form
    846,147.20/1,269,220.80 = 285,123.20/x
  3. Step 3: Cross multiply
    846,147.20x = 1,269,220.80 × 285,123.20
  4. Step 4: Simplify right side
    846,147.20x = 361,884,296,002.56
  5. Step 5: Solve for x
    x = 361,884,296,002.56/846,147.20
  6. Step 6: Final answer
    x = 427,684.80

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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.