Home / 631,385.35-947,313.31-378,847.09

Finding the Fourth Proportional to 631,385.35, 947,313.31 and 378,847.09

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Solution

The fourth proportional to 631,385.35, 947,313.31 and 378,847.09 is: 568,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,385.35 : 947,313.31 = 378,847.09 : x
  2. Step 2: Convert to fraction form
    631,385.35/947,313.31 = 378,847.09/x
  3. Step 3: Cross multiply
    631,385.35x = 947,313.31 × 378,847.09
  4. Step 4: Simplify right side
    631,385.35x = 358,886,887,496.37
  5. Step 5: Solve for x
    x = 358,886,887,496.37/631,385.35
  6. Step 6: Final answer
    x = 568,411.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.