Home / 1,242,138.36-1,862,507.64-432,151.32

Finding the Fourth Proportional to 1,242,138.36, 1,862,507.64 and 432,151.32

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Solution

The fourth proportional to 1,242,138.36, 1,862,507.64 and 432,151.32 is: 647,983.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,138.36 : 1,862,507.64 = 432,151.32 : x
  2. Step 2: Convert to fraction form
    1,242,138.36/1,862,507.64 = 432,151.32/x
  3. Step 3: Cross multiply
    1,242,138.36x = 1,862,507.64 × 432,151.32
  4. Step 4: Simplify right side
    1,242,138.36x = 804,885,135,136.09
  5. Step 5: Solve for x
    x = 804,885,135,136.09/1,242,138.36
  6. Step 6: Final answer
    x = 647,983.48

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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.