Home / 820,596.80-1,230,895.20-378,228.80

Finding the Fourth Proportional to 820,596.80, 1,230,895.20 and 378,228.80

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Solution

The fourth proportional to 820,596.80, 1,230,895.20 and 378,228.80 is: 567,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,596.80 : 1,230,895.20 = 378,228.80 : x
  2. Step 2: Convert to fraction form
    820,596.80/1,230,895.20 = 378,228.80/x
  3. Step 3: Cross multiply
    820,596.80x = 1,230,895.20 × 378,228.80
  4. Step 4: Simplify right side
    820,596.80x = 465,560,014,421.76
  5. Step 5: Solve for x
    x = 465,560,014,421.76/820,596.80
  6. Step 6: Final answer
    x = 567,343.20

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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.