Home / 638,464.56-881,077.92-351,983.76

Finding the Fourth Proportional to 638,464.56, 881,077.92 and 351,983.76

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Solution

The fourth proportional to 638,464.56, 881,077.92 and 351,983.76 is: 485,735.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,464.56 : 881,077.92 = 351,983.76 : x
  2. Step 2: Convert to fraction form
    638,464.56/881,077.92 = 351,983.76/x
  3. Step 3: Cross multiply
    638,464.56x = 881,077.92 × 351,983.76
  4. Step 4: Simplify right side
    638,464.56x = 310,125,119,134.58
  5. Step 5: Solve for x
    x = 310,125,119,134.58/638,464.56
  6. Step 6: Final answer
    x = 485,735.84

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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.