Home / 818,831.67-1,228,247.51-319,845.75

Finding the Fourth Proportional to 818,831.67, 1,228,247.51 and 319,845.75

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Solution

The fourth proportional to 818,831.67, 1,228,247.51 and 319,845.75 is: 479,768.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,831.67 : 1,228,247.51 = 319,845.75 : x
  2. Step 2: Convert to fraction form
    818,831.67/1,228,247.51 = 319,845.75/x
  3. Step 3: Cross multiply
    818,831.67x = 1,228,247.51 × 319,845.75
  4. Step 4: Simplify right side
    818,831.67x = 392,849,744,422.35
  5. Step 5: Solve for x
    x = 392,849,744,422.35/818,831.67
  6. Step 6: Final answer
    x = 479,768.63

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Similar ratio
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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.