Home / 1,222,213.76-1,686,672.96-678,384.48

Finding the Fourth Proportional to 1,222,213.76, 1,686,672.96 and 678,384.48

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Solution

The fourth proportional to 1,222,213.76, 1,686,672.96 and 678,384.48 is: 936,180.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,213.76 : 1,686,672.96 = 678,384.48 : x
  2. Step 2: Convert to fraction form
    1,222,213.76/1,686,672.96 = 678,384.48/x
  3. Step 3: Cross multiply
    1,222,213.76x = 1,686,672.96 × 678,384.48
  4. Step 4: Simplify right side
    1,222,213.76x = 1,144,212,758,899.66
  5. Step 5: Solve for x
    x = 1,144,212,758,899.66/1,222,213.76
  6. Step 6: Final answer
    x = 936,180.56

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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.