Home / 878,039.24-1,317,073.44-309,427.22

Finding the Fourth Proportional to 878,039.24, 1,317,073.44 and 309,427.22

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Solution

The fourth proportional to 878,039.24, 1,317,073.44 and 309,427.22 is: 464,145.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,039.24 : 1,317,073.44 = 309,427.22 : x
  2. Step 2: Convert to fraction form
    878,039.24/1,317,073.44 = 309,427.22/x
  3. Step 3: Cross multiply
    878,039.24x = 1,317,073.44 × 309,427.22
  4. Step 4: Simplify right side
    878,039.24x = 407,538,366,489.67
  5. Step 5: Solve for x
    x = 407,538,366,489.67/878,039.24
  6. Step 6: Final answer
    x = 464,145.96

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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.