Home / 1,222,213.49-1,686,733.43-678,349.31

Finding the Fourth Proportional to 1,222,213.49, 1,686,733.43 and 678,349.31

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Solution

The fourth proportional to 1,222,213.49, 1,686,733.43 and 678,349.31 is: 936,165.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,213.49 : 1,686,733.43 = 678,349.31 : x
  2. Step 2: Convert to fraction form
    1,222,213.49/1,686,733.43 = 678,349.31/x
  3. Step 3: Cross multiply
    1,222,213.49x = 1,686,733.43 × 678,349.31
  4. Step 4: Simplify right side
    1,222,213.49x = 1,144,194,456,082.64
  5. Step 5: Solve for x
    x = 1,144,194,456,082.64/1,222,213.49
  6. Step 6: Final answer
    x = 936,165.79

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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.