Home / 1,320,011.15-1,821,616.12-716,399.15

Finding the Fourth Proportional to 1,320,011.15, 1,821,616.12 and 716,399.15

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Solution

The fourth proportional to 1,320,011.15, 1,821,616.12 and 716,399.15 is: 988,631.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,011.15 : 1,821,616.12 = 716,399.15 : x
  2. Step 2: Convert to fraction form
    1,320,011.15/1,821,616.12 = 716,399.15/x
  3. Step 3: Cross multiply
    1,320,011.15x = 1,821,616.12 × 716,399.15
  4. Step 4: Simplify right side
    1,320,011.15x = 1,305,004,231,781.72
  5. Step 5: Solve for x
    x = 1,305,004,231,781.72/1,320,011.15
  6. Step 6: Final answer
    x = 988,631.22

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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.