Home / 919,938.80-1,379,908.20-415,069.85

Finding the Fourth Proportional to 919,938.80, 1,379,908.20 and 415,069.85

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Solution

The fourth proportional to 919,938.80, 1,379,908.20 and 415,069.85 is: 622,604.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,938.80 : 1,379,908.20 = 415,069.85 : x
  2. Step 2: Convert to fraction form
    919,938.80/1,379,908.20 = 415,069.85/x
  3. Step 3: Cross multiply
    919,938.80x = 1,379,908.20 × 415,069.85
  4. Step 4: Simplify right side
    919,938.80x = 572,758,289,587.77
  5. Step 5: Solve for x
    x = 572,758,289,587.77/919,938.80
  6. Step 6: Final answer
    x = 622,604.78

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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.