Home / 515,384.36-711,206.39-285,939.20

Finding the Fourth Proportional to 515,384.36, 711,206.39 and 285,939.20

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Solution

The fourth proportional to 515,384.36, 711,206.39 and 285,939.20 is: 394,582.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,384.36 : 711,206.39 = 285,939.20 : x
  2. Step 2: Convert to fraction form
    515,384.36/711,206.39 = 285,939.20/x
  3. Step 3: Cross multiply
    515,384.36x = 711,206.39 × 285,939.20
  4. Step 4: Simplify right side
    515,384.36x = 203,361,788,684.35
  5. Step 5: Solve for x
    x = 203,361,788,684.35/515,384.36
  6. Step 6: Final answer
    x = 394,582.77

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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.