Home / 670,485.67-1,005,789.26-221,207.83

Finding the Fourth Proportional to 670,485.67, 1,005,789.26 and 221,207.83

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Solution

The fourth proportional to 670,485.67, 1,005,789.26 and 221,207.83 is: 331,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,485.67 : 1,005,789.26 = 221,207.83 : x
  2. Step 2: Convert to fraction form
    670,485.67/1,005,789.26 = 221,207.83/x
  3. Step 3: Cross multiply
    670,485.67x = 1,005,789.26 × 221,207.83
  4. Step 4: Simplify right side
    670,485.67x = 222,488,459,641.91
  5. Step 5: Solve for x
    x = 222,488,459,641.91/670,485.67
  6. Step 6: Final answer
    x = 331,831.79

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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.