Home / 1,520,147.70-2,280,221.55-620,999.10

Finding the Fourth Proportional to 1,520,147.70, 2,280,221.55 and 620,999.10

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Solution

The fourth proportional to 1,520,147.70, 2,280,221.55 and 620,999.10 is: 931,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520,147.70 : 2,280,221.55 = 620,999.10 : x
  2. Step 2: Convert to fraction form
    1,520,147.70/2,280,221.55 = 620,999.10/x
  3. Step 3: Cross multiply
    1,520,147.70x = 2,280,221.55 × 620,999.10
  4. Step 4: Simplify right side
    1,520,147.70x = 1,416,015,530,350.60
  5. Step 5: Solve for x
    x = 1,416,015,530,350.60/1,520,147.70
  6. Step 6: Final answer
    x = 931,498.65

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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.