Home / 811,985.01-1,120,463.39-485,233.17

Finding the Fourth Proportional to 811,985.01, 1,120,463.39 and 485,233.17

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Solution

The fourth proportional to 811,985.01, 1,120,463.39 and 485,233.17 is: 669,576.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,985.01 : 1,120,463.39 = 485,233.17 : x
  2. Step 2: Convert to fraction form
    811,985.01/1,120,463.39 = 485,233.17/x
  3. Step 3: Cross multiply
    811,985.01x = 1,120,463.39 × 485,233.17
  4. Step 4: Simplify right side
    811,985.01x = 543,686,005,019.33
  5. Step 5: Solve for x
    x = 543,686,005,019.33/811,985.01
  6. Step 6: Final answer
    x = 669,576.41

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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.