Home / 878,458.88-1,317,688.32-279,420.14

Finding the Fourth Proportional to 878,458.88, 1,317,688.32 and 279,420.14

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Solution

The fourth proportional to 878,458.88, 1,317,688.32 and 279,420.14 is: 419,130.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,458.88 : 1,317,688.32 = 279,420.14 : x
  2. Step 2: Convert to fraction form
    878,458.88/1,317,688.32 = 279,420.14/x
  3. Step 3: Cross multiply
    878,458.88x = 1,317,688.32 × 279,420.14
  4. Step 4: Simplify right side
    878,458.88x = 368,188,653,203.65
  5. Step 5: Solve for x
    x = 368,188,653,203.65/878,458.88
  6. Step 6: Final answer
    x = 419,130.21

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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.