Home / 690,648.24-1,035,186.77-420,180.17

Finding the Fourth Proportional to 690,648.24, 1,035,186.77 and 420,180.17

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Solution

The fourth proportional to 690,648.24, 1,035,186.77 and 420,180.17 is: 629,792.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,648.24 : 1,035,186.77 = 420,180.17 : x
  2. Step 2: Convert to fraction form
    690,648.24/1,035,186.77 = 420,180.17/x
  3. Step 3: Cross multiply
    690,648.24x = 1,035,186.77 × 420,180.17
  4. Step 4: Simplify right side
    690,648.24x = 434,964,951,181.14
  5. Step 5: Solve for x
    x = 434,964,951,181.14/690,648.24
  6. Step 6: Final answer
    x = 629,792.31

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1.5x scale

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.