Home / 818,830.92-1,228,246.38-319,845

Finding the Fourth Proportional to 818,830.92, 1,228,246.38 and 319,845

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Solution

The fourth proportional to 818,830.92, 1,228,246.38 and 319,845 is: 479,767.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,830.92 : 1,228,246.38 = 319,845 : x
  2. Step 2: Convert to fraction form
    818,830.92/1,228,246.38 = 319,845/x
  3. Step 3: Cross multiply
    818,830.92x = 1,228,246.38 × 319,845
  4. Step 4: Simplify right side
    818,830.92x = 392,848,463,411.10
  5. Step 5: Solve for x
    x = 392,848,463,411.10/818,830.92
  6. Step 6: Final answer
    x = 479,767.50

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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.