Home / 818,831.17-1,228,246.76-319,845.25

Finding the Fourth Proportional to 818,831.17, 1,228,246.76 and 319,845.25

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Solution

The fourth proportional to 818,831.17, 1,228,246.76 and 319,845.25 is: 479,767.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,831.17 : 1,228,246.76 = 319,845.25 : x
  2. Step 2: Convert to fraction form
    818,831.17/1,228,246.76 = 319,845.25/x
  3. Step 3: Cross multiply
    818,831.17x = 1,228,246.76 × 319,845.25
  4. Step 4: Simplify right side
    818,831.17x = 392,848,892,013.89
  5. Step 5: Solve for x
    x = 392,848,892,013.89/818,831.17
  6. Step 6: Final answer
    x = 479,767.88

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Double scale
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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.