Home / 642,054.72-886,003.89-351,667.56

Finding the Fourth Proportional to 642,054.72, 886,003.89 and 351,667.56

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Solution

The fourth proportional to 642,054.72, 886,003.89 and 351,667.56 is: 485,283.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,054.72 : 886,003.89 = 351,667.56 : x
  2. Step 2: Convert to fraction form
    642,054.72/886,003.89 = 351,667.56/x
  3. Step 3: Cross multiply
    642,054.72x = 886,003.89 × 351,667.56
  4. Step 4: Simplify right side
    642,054.72x = 311,578,826,146.81
  5. Step 5: Solve for x
    x = 311,578,826,146.81/642,054.72
  6. Step 6: Final answer
    x = 485,283.91

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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.