Home / 499,983.91-689,960.77-285,193.51

Finding the Fourth Proportional to 499,983.91, 689,960.77 and 285,193.51

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Solution

The fourth proportional to 499,983.91, 689,960.77 and 285,193.51 is: 393,557.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,983.91 : 689,960.77 = 285,193.51 : x
  2. Step 2: Convert to fraction form
    499,983.91/689,960.77 = 285,193.51/x
  3. Step 3: Cross multiply
    499,983.91x = 689,960.77 × 285,193.51
  4. Step 4: Simplify right side
    499,983.91x = 196,772,333,758.60
  5. Step 5: Solve for x
    x = 196,772,333,758.60/499,983.91
  6. Step 6: Final answer
    x = 393,557.33

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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.