Home / 638,467.40-881,091.86-351,997.76

Finding the Fourth Proportional to 638,467.40, 881,091.86 and 351,997.76

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Solution

The fourth proportional to 638,467.40, 881,091.86 and 351,997.76 is: 485,760.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,467.40 : 881,091.86 = 351,997.76 : x
  2. Step 2: Convert to fraction form
    638,467.40/881,091.86 = 351,997.76/x
  3. Step 3: Cross multiply
    638,467.40x = 881,091.86 × 351,997.76
  4. Step 4: Simplify right side
    638,467.40x = 310,142,354,908.79
  5. Step 5: Solve for x
    x = 310,142,354,908.79/638,467.40
  6. Step 6: Final answer
    x = 485,760.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.