Home / 806,380.80-1,209,355.20-245,264.64

Finding the Fourth Proportional to 806,380.80, 1,209,355.20 and 245,264.64

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Solution

The fourth proportional to 806,380.80, 1,209,355.20 and 245,264.64 is: 367,831.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,380.80 : 1,209,355.20 = 245,264.64 : x
  2. Step 2: Convert to fraction form
    806,380.80/1,209,355.20 = 245,264.64/x
  3. Step 3: Cross multiply
    806,380.80x = 1,209,355.20 × 245,264.64
  4. Step 4: Simplify right side
    806,380.80x = 296,612,067,760.13
  5. Step 5: Solve for x
    x = 296,612,067,760.13/806,380.80
  6. Step 6: Final answer
    x = 367,831.26

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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.