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Finding the Fourth Proportional to 806,480.78, 1,209,896.12 and 245,500.70

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Solution

The fourth proportional to 806,480.78, 1,209,896.12 and 245,500.70 is: 368,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,480.78 : 1,209,896.12 = 245,500.70 : x
  2. Step 2: Convert to fraction form
    806,480.78/1,209,896.12 = 245,500.70/x
  3. Step 3: Cross multiply
    806,480.78x = 1,209,896.12 × 245,500.70
  4. Step 4: Simplify right side
    806,480.78x = 297,030,337,110.30
  5. Step 5: Solve for x
    x = 297,030,337,110.30/806,480.78
  6. Step 6: Final answer
    x = 368,304.30

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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.