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Finding the Fourth Proportional to 878,806.80, 1,318,426.20 and 247,712.40

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Solution

The fourth proportional to 878,806.80, 1,318,426.20 and 247,712.40 is: 371,629.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,806.80 : 1,318,426.20 = 247,712.40 : x
  2. Step 2: Convert to fraction form
    878,806.80/1,318,426.20 = 247,712.40/x
  3. Step 3: Cross multiply
    878,806.80x = 1,318,426.20 × 247,712.40
  4. Step 4: Simplify right side
    878,806.80x = 326,590,518,224.88
  5. Step 5: Solve for x
    x = 326,590,518,224.88/878,806.80
  6. Step 6: Final answer
    x = 371,629.48

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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.