Home / 869,120.40-1,301,056.20-764,144.40

Finding the Fourth Proportional to 869,120.40, 1,301,056.20 and 764,144.40

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Solution

The fourth proportional to 869,120.40, 1,301,056.20 and 764,144.40 is: 1,143,909.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,120.40 : 1,301,056.20 = 764,144.40 : x
  2. Step 2: Convert to fraction form
    869,120.40/1,301,056.20 = 764,144.40/x
  3. Step 3: Cross multiply
    869,120.40x = 1,301,056.20 × 764,144.40
  4. Step 4: Simplify right side
    869,120.40x = 994,194,809,315.28
  5. Step 5: Solve for x
    x = 994,194,809,315.28/869,120.40
  6. Step 6: Final answer
    x = 1,143,909.19

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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.