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Finding the Fourth Proportional to 808,812.80, 1,213,276.80 and 247,846.40

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Solution

The fourth proportional to 808,812.80, 1,213,276.80 and 247,846.40 is: 371,787.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,812.80 : 1,213,276.80 = 247,846.40 : x
  2. Step 2: Convert to fraction form
    808,812.80/1,213,276.80 = 247,846.40/x
  3. Step 3: Cross multiply
    808,812.80x = 1,213,276.80 × 247,846.40
  4. Step 4: Simplify right side
    808,812.80x = 300,706,287,083.52
  5. Step 5: Solve for x
    x = 300,706,287,083.52/808,812.80
  6. Step 6: Final answer
    x = 371,787.25

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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.