Home / 1,174,949-1,621,439.52-638,405

Finding the Fourth Proportional to 1,174,949, 1,621,439.52 and 638,405

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Solution

The fourth proportional to 1,174,949, 1,621,439.52 and 638,405 is: 881,004.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,949 : 1,621,439.52 = 638,405 : x
  2. Step 2: Convert to fraction form
    1,174,949/1,621,439.52 = 638,405/x
  3. Step 3: Cross multiply
    1,174,949x = 1,621,439.52 × 638,405
  4. Step 4: Simplify right side
    1,174,949x = 1,035,135,096,765.60
  5. Step 5: Solve for x
    x = 1,035,135,096,765.60/1,174,949
  6. Step 6: Final answer
    x = 881,004.28

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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.