Home / 613,949.07-921,128.57-272,345.37

Finding the Fourth Proportional to 613,949.07, 921,128.57 and 272,345.37

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Solution

The fourth proportional to 613,949.07, 921,128.57 and 272,345.37 is: 408,608.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,949.07 : 921,128.57 = 272,345.37 : x
  2. Step 2: Convert to fraction form
    613,949.07/921,128.57 = 272,345.37/x
  3. Step 3: Cross multiply
    613,949.07x = 921,128.57 × 272,345.37
  4. Step 4: Simplify right side
    613,949.07x = 250,865,099,852.49
  5. Step 5: Solve for x
    x = 250,865,099,852.49/613,949.07
  6. Step 6: Final answer
    x = 408,608.97

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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.