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Finding the Fourth Proportional to 619,846.20, 929,769.30 and 367,903.80

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Solution

The fourth proportional to 619,846.20, 929,769.30 and 367,903.80 is: 551,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,846.20 : 929,769.30 = 367,903.80 : x
  2. Step 2: Convert to fraction form
    619,846.20/929,769.30 = 367,903.80/x
  3. Step 3: Cross multiply
    619,846.20x = 929,769.30 × 367,903.80
  4. Step 4: Simplify right side
    619,846.20x = 342,065,658,593.34
  5. Step 5: Solve for x
    x = 342,065,658,593.34/619,846.20
  6. Step 6: Final answer
    x = 551,855.70

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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.