Home / 1,195,991.20-1,791,989.72-840,368.60

Finding the Fourth Proportional to 1,195,991.20, 1,791,989.72 and 840,368.60

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Solution

The fourth proportional to 1,195,991.20, 1,791,989.72 and 840,368.60 is: 1,259,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195,991.20 : 1,791,989.72 = 840,368.60 : x
  2. Step 2: Convert to fraction form
    1,195,991.20/1,791,989.72 = 840,368.60/x
  3. Step 3: Cross multiply
    1,195,991.20x = 1,791,989.72 × 840,368.60
  4. Step 4: Simplify right side
    1,195,991.20x = 1,505,931,892,210.79
  5. Step 5: Solve for x
    x = 1,505,931,892,210.79/1,195,991.20
  6. Step 6: Final answer
    x = 1,259,149.64

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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.