Home / 499,845.16-689,769.16-285,054.36

Finding the Fourth Proportional to 499,845.16, 689,769.16 and 285,054.36

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Solution

The fourth proportional to 499,845.16, 689,769.16 and 285,054.36 is: 393,365.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,845.16 : 689,769.16 = 285,054.36 : x
  2. Step 2: Convert to fraction form
    499,845.16/689,769.16 = 285,054.36/x
  3. Step 3: Cross multiply
    499,845.16x = 689,769.16 × 285,054.36
  4. Step 4: Simplify right side
    499,845.16x = 196,621,706,451.54
  5. Step 5: Solve for x
    x = 196,621,706,451.54/499,845.16
  6. Step 6: Final answer
    x = 393,365.23

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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.