Home / 824,469.80-1,235,984.70-319,375.40

Finding the Fourth Proportional to 824,469.80, 1,235,984.70 and 319,375.40

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Solution

The fourth proportional to 824,469.80, 1,235,984.70 and 319,375.40 is: 478,784.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    824,469.80 : 1,235,984.70 = 319,375.40 : x
  2. Step 2: Convert to fraction form
    824,469.80/1,235,984.70 = 319,375.40/x
  3. Step 3: Cross multiply
    824,469.80x = 1,235,984.70 × 319,375.40
  4. Step 4: Simplify right side
    824,469.80x = 394,743,107,956.38
  5. Step 5: Solve for x
    x = 394,743,107,956.38/824,469.80
  6. Step 6: Final answer
    x = 478,784.19

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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.