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Finding the Fourth Proportional to 878,684.16, 1,317,888 and 247,664.64

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Solution

The fourth proportional to 878,684.16, 1,317,888 and 247,664.64 is: 371,458.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,684.16 : 1,317,888 = 247,664.64 : x
  2. Step 2: Convert to fraction form
    878,684.16/1,317,888 = 247,664.64/x
  3. Step 3: Cross multiply
    878,684.16x = 1,317,888 × 247,664.64
  4. Step 4: Simplify right side
    878,684.16x = 326,394,257,080.32
  5. Step 5: Solve for x
    x = 326,394,257,080.32/878,684.16
  6. Step 6: Final answer
    x = 371,458.00

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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.