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Finding the Fourth Proportional to 806,661.80, 1,210,107.90 and 274,207.40

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Solution

The fourth proportional to 806,661.80, 1,210,107.90 and 274,207.40 is: 411,350.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,661.80 : 1,210,107.90 = 274,207.40 : x
  2. Step 2: Convert to fraction form
    806,661.80/1,210,107.90 = 274,207.40/x
  3. Step 3: Cross multiply
    806,661.80x = 1,210,107.90 × 274,207.40
  4. Step 4: Simplify right side
    806,661.80x = 331,820,540,978.46
  5. Step 5: Solve for x
    x = 331,820,540,978.46/806,661.80
  6. Step 6: Final answer
    x = 411,350.26

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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.