Home / 505,766.22-697,929.39-290,909.90

Finding the Fourth Proportional to 505,766.22, 697,929.39 and 290,909.90

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Solution

The fourth proportional to 505,766.22, 697,929.39 and 290,909.90 is: 401,439.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,766.22 : 697,929.39 = 290,909.90 : x
  2. Step 2: Convert to fraction form
    505,766.22/697,929.39 = 290,909.90/x
  3. Step 3: Cross multiply
    505,766.22x = 697,929.39 × 290,909.90
  4. Step 4: Simplify right side
    505,766.22x = 203,034,565,562.31
  5. Step 5: Solve for x
    x = 203,034,565,562.31/505,766.22
  6. Step 6: Final answer
    x = 401,439.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.