Home / 638,429.86-881,027.42-351,949.94

Finding the Fourth Proportional to 638,429.86, 881,027.42 and 351,949.94

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Solution

The fourth proportional to 638,429.86, 881,027.42 and 351,949.94 is: 485,687.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,429.86 : 881,027.42 = 351,949.94 : x
  2. Step 2: Convert to fraction form
    638,429.86/881,027.42 = 351,949.94/x
  3. Step 3: Cross multiply
    638,429.86x = 881,027.42 × 351,949.94
  4. Step 4: Simplify right side
    638,429.86x = 310,077,544,746.32
  5. Step 5: Solve for x
    x = 310,077,544,746.32/638,429.86
  6. Step 6: Final answer
    x = 485,687.72

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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.