Home / 499,418.01-689,039.82-305,623.69

Finding the Fourth Proportional to 499,418.01, 689,039.82 and 305,623.69

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Solution

The fourth proportional to 499,418.01, 689,039.82 and 305,623.69 is: 421,664.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,418.01 : 689,039.82 = 305,623.69 : x
  2. Step 2: Convert to fraction form
    499,418.01/689,039.82 = 305,623.69/x
  3. Step 3: Cross multiply
    499,418.01x = 689,039.82 × 305,623.69
  4. Step 4: Simplify right side
    499,418.01x = 210,586,890,622.74
  5. Step 5: Solve for x
    x = 210,586,890,622.74/499,418.01
  6. Step 6: Final answer
    x = 421,664.59

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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.