Home / 643,727.05-888,301.99-401,995.20

Finding the Fourth Proportional to 643,727.05, 888,301.99 and 401,995.20

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Solution

The fourth proportional to 643,727.05, 888,301.99 and 401,995.20 is: 554,727.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,727.05 : 888,301.99 = 401,995.20 : x
  2. Step 2: Convert to fraction form
    643,727.05/888,301.99 = 401,995.20/x
  3. Step 3: Cross multiply
    643,727.05x = 888,301.99 × 401,995.20
  4. Step 4: Simplify right side
    643,727.05x = 357,093,139,964.07
  5. Step 5: Solve for x
    x = 357,093,139,964.07/643,727.05
  6. Step 6: Final answer
    x = 554,727.57

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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.