Home / 499,982.91-689,959.40-285,192.51

Finding the Fourth Proportional to 499,982.91, 689,959.40 and 285,192.51

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Solution

The fourth proportional to 499,982.91, 689,959.40 and 285,192.51 is: 393,555.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,982.91 : 689,959.40 = 285,192.51 : x
  2. Step 2: Convert to fraction form
    499,982.91/689,959.40 = 285,192.51/x
  3. Step 3: Cross multiply
    499,982.91x = 689,959.40 × 285,192.51
  4. Step 4: Simplify right side
    499,982.91x = 196,771,251,658.13
  5. Step 5: Solve for x
    x = 196,771,251,658.13/499,982.91
  6. Step 6: Final answer
    x = 393,555.96

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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.