Home / 869,109.40-1,301,039.70-764,133.40

Finding the Fourth Proportional to 869,109.40, 1,301,039.70 and 764,133.40

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Solution

The fourth proportional to 869,109.40, 1,301,039.70 and 764,133.40 is: 1,143,892.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,109.40 : 1,301,039.70 = 764,133.40 : x
  2. Step 2: Convert to fraction form
    869,109.40/1,301,039.70 = 764,133.40/x
  3. Step 3: Cross multiply
    869,109.40x = 1,301,039.70 × 764,133.40
  4. Step 4: Simplify right side
    869,109.40x = 994,167,889,495.98
  5. Step 5: Solve for x
    x = 994,167,889,495.98/869,109.40
  6. Step 6: Final answer
    x = 1,143,892.69

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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.