Home / 672,739.56-1,007,967.42-405,939.48

Finding the Fourth Proportional to 672,739.56, 1,007,967.42 and 405,939.48

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Solution

The fourth proportional to 672,739.56, 1,007,967.42 and 405,939.48 is: 608,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,739.56 : 1,007,967.42 = 405,939.48 : x
  2. Step 2: Convert to fraction form
    672,739.56/1,007,967.42 = 405,939.48/x
  3. Step 3: Cross multiply
    672,739.56x = 1,007,967.42 × 405,939.48
  4. Step 4: Simplify right side
    672,739.56x = 409,173,770,331.74
  5. Step 5: Solve for x
    x = 409,173,770,331.74/672,739.56
  6. Step 6: Final answer
    x = 608,220.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.