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Finding the Fourth Proportional to 407,991.82, 607,887.09 and 385,072.97

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Solution

The fourth proportional to 407,991.82, 607,887.09 and 385,072.97 is: 573,739.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,991.82 : 607,887.09 = 385,072.97 : x
  2. Step 2: Convert to fraction form
    407,991.82/607,887.09 = 385,072.97/x
  3. Step 3: Cross multiply
    407,991.82x = 607,887.09 × 385,072.97
  4. Step 4: Simplify right side
    407,991.82x = 234,080,885,245.59
  5. Step 5: Solve for x
    x = 234,080,885,245.59/407,991.82
  6. Step 6: Final answer
    x = 573,739.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.