Home / 869,140.40-1,301,086.20-764,164.40

Finding the Fourth Proportional to 869,140.40, 1,301,086.20 and 764,164.40

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Solution

The fourth proportional to 869,140.40, 1,301,086.20 and 764,164.40 is: 1,143,939.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,140.40 : 1,301,086.20 = 764,164.40 : x
  2. Step 2: Convert to fraction form
    869,140.40/1,301,086.20 = 764,164.40/x
  3. Step 3: Cross multiply
    869,140.40x = 1,301,086.20 × 764,164.40
  4. Step 4: Simplify right side
    869,140.40x = 994,243,755,371.28
  5. Step 5: Solve for x
    x = 994,243,755,371.28/869,140.40
  6. Step 6: Final answer
    x = 1,143,939.18

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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.