Home / 766,068.44-1,057,133.36-421,837.16

Finding the Fourth Proportional to 766,068.44, 1,057,133.36 and 421,837.16

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Solution

The fourth proportional to 766,068.44, 1,057,133.36 and 421,837.16 is: 582,112.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,068.44 : 1,057,133.36 = 421,837.16 : x
  2. Step 2: Convert to fraction form
    766,068.44/1,057,133.36 = 421,837.16/x
  3. Step 3: Cross multiply
    766,068.44x = 1,057,133.36 × 421,837.16
  4. Step 4: Simplify right side
    766,068.44x = 445,938,126,928.81
  5. Step 5: Solve for x
    x = 445,938,126,928.81/766,068.44
  6. Step 6: Final answer
    x = 582,112.65

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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.