Home / 920,190.60-1,380,350.70-521,022.60

Finding the Fourth Proportional to 920,190.60, 1,380,350.70 and 521,022.60

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Solution

The fourth proportional to 920,190.60, 1,380,350.70 and 521,022.60 is: 781,570.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,190.60 : 1,380,350.70 = 521,022.60 : x
  2. Step 2: Convert to fraction form
    920,190.60/1,380,350.70 = 521,022.60/x
  3. Step 3: Cross multiply
    920,190.60x = 1,380,350.70 × 521,022.60
  4. Step 4: Simplify right side
    920,190.60x = 719,193,910,625.82
  5. Step 5: Solve for x
    x = 719,193,910,625.82/920,190.60
  6. Step 6: Final answer
    x = 781,570.59

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Double scale
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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.