Home / 1,211,451.60-1,817,177.40-1,120,213.20

Finding the Fourth Proportional to 1,211,451.60, 1,817,177.40 and 1,120,213.20

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Solution

The fourth proportional to 1,211,451.60, 1,817,177.40 and 1,120,213.20 is: 1,680,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,451.60 : 1,817,177.40 = 1,120,213.20 : x
  2. Step 2: Convert to fraction form
    1,211,451.60/1,817,177.40 = 1,120,213.20/x
  3. Step 3: Cross multiply
    1,211,451.60x = 1,817,177.40 × 1,120,213.20
  4. Step 4: Simplify right side
    1,211,451.60x = 2,035,626,110,221.68
  5. Step 5: Solve for x
    x = 2,035,626,110,221.68/1,211,451.60
  6. Step 6: Final answer
    x = 1,680,319.80

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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.