Home / 800,885.05-1,105,221.80-438,308.69

Finding the Fourth Proportional to 800,885.05, 1,105,221.80 and 438,308.69

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Solution

The fourth proportional to 800,885.05, 1,105,221.80 and 438,308.69 is: 604,866.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,885.05 : 1,105,221.80 = 438,308.69 : x
  2. Step 2: Convert to fraction form
    800,885.05/1,105,221.80 = 438,308.69/x
  3. Step 3: Cross multiply
    800,885.05x = 1,105,221.80 × 438,308.69
  4. Step 4: Simplify right side
    800,885.05x = 484,428,323,176.27
  5. Step 5: Solve for x
    x = 484,428,323,176.27/800,885.05
  6. Step 6: Final answer
    x = 604,866.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.