Home / 642,995.46-887,383.89-356,571.36

Finding the Fourth Proportional to 642,995.46, 887,383.89 and 356,571.36

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Solution

The fourth proportional to 642,995.46, 887,383.89 and 356,571.36 is: 492,096.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,995.46 : 887,383.89 = 356,571.36 : x
  2. Step 2: Convert to fraction form
    642,995.46/887,383.89 = 356,571.36/x
  3. Step 3: Cross multiply
    642,995.46x = 887,383.89 × 356,571.36
  4. Step 4: Simplify right side
    642,995.46x = 316,415,680,499.39
  5. Step 5: Solve for x
    x = 316,415,680,499.39/642,995.46
  6. Step 6: Final answer
    x = 492,096.29

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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.