Home / 820,199.70-1,230,299.55-460,000.80

Finding the Fourth Proportional to 820,199.70, 1,230,299.55 and 460,000.80

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Solution

The fourth proportional to 820,199.70, 1,230,299.55 and 460,000.80 is: 690,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,199.70 : 1,230,299.55 = 460,000.80 : x
  2. Step 2: Convert to fraction form
    820,199.70/1,230,299.55 = 460,000.80/x
  3. Step 3: Cross multiply
    820,199.70x = 1,230,299.55 × 460,000.80
  4. Step 4: Simplify right side
    820,199.70x = 565,938,777,239.64
  5. Step 5: Solve for x
    x = 565,938,777,239.64/820,199.70
  6. Step 6: Final answer
    x = 690,001.20

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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.