Home / 766,112.71-1,057,242.88-421,956.44

Finding the Fourth Proportional to 766,112.71, 1,057,242.88 and 421,956.44

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Solution

The fourth proportional to 766,112.71, 1,057,242.88 and 421,956.44 is: 582,303.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,112.71 : 1,057,242.88 = 421,956.44 : x
  2. Step 2: Convert to fraction form
    766,112.71/1,057,242.88 = 421,956.44/x
  3. Step 3: Cross multiply
    766,112.71x = 1,057,242.88 × 421,956.44
  4. Step 4: Simplify right side
    766,112.71x = 446,110,441,066.04
  5. Step 5: Solve for x
    x = 446,110,441,066.04/766,112.71
  6. Step 6: Final answer
    x = 582,303.93

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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.