Home / 665,357.26-918,192.10-378,877.33

Finding the Fourth Proportional to 665,357.26, 918,192.10 and 378,877.33

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Solution

The fourth proportional to 665,357.26, 918,192.10 and 378,877.33 is: 522,850.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,357.26 : 918,192.10 = 378,877.33 : x
  2. Step 2: Convert to fraction form
    665,357.26/918,192.10 = 378,877.33/x
  3. Step 3: Cross multiply
    665,357.26x = 918,192.10 × 378,877.33
  4. Step 4: Simplify right side
    665,357.26x = 347,882,171,275.09
  5. Step 5: Solve for x
    x = 347,882,171,275.09/665,357.26
  6. Step 6: Final answer
    x = 522,850.19

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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.