Home / 919,930.60-1,379,895.90-320,692.60

Finding the Fourth Proportional to 919,930.60, 1,379,895.90 and 320,692.60

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Solution

The fourth proportional to 919,930.60, 1,379,895.90 and 320,692.60 is: 481,038.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,930.60 : 1,379,895.90 = 320,692.60 : x
  2. Step 2: Convert to fraction form
    919,930.60/1,379,895.90 = 320,692.60/x
  3. Step 3: Cross multiply
    919,930.60x = 1,379,895.90 × 320,692.60
  4. Step 4: Simplify right side
    919,930.60x = 442,522,403,900.34
  5. Step 5: Solve for x
    x = 442,522,403,900.34/919,930.60
  6. Step 6: Final answer
    x = 481,038.90

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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.