Home / 499,067.72-688,727.27-305,471.58

Finding the Fourth Proportional to 499,067.72, 688,727.27 and 305,471.58

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Solution

The fourth proportional to 499,067.72, 688,727.27 and 305,471.58 is: 421,559.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,067.72 : 688,727.27 = 305,471.58 : x
  2. Step 2: Convert to fraction form
    499,067.72/688,727.27 = 305,471.58/x
  3. Step 3: Cross multiply
    499,067.72x = 688,727.27 × 305,471.58
  4. Step 4: Simplify right side
    499,067.72x = 210,386,605,828.63
  5. Step 5: Solve for x
    x = 210,386,605,828.63/499,067.72
  6. Step 6: Final answer
    x = 421,559.23

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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.