Home / 1,223,142.21-1,687,783.39-679,204.04

Finding the Fourth Proportional to 1,223,142.21, 1,687,783.39 and 679,204.04

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Solution

The fourth proportional to 1,223,142.21, 1,687,783.39 and 679,204.04 is: 937,216.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,142.21 : 1,687,783.39 = 679,204.04 : x
  2. Step 2: Convert to fraction form
    1,223,142.21/1,687,783.39 = 679,204.04/x
  3. Step 3: Cross multiply
    1,223,142.21x = 1,687,783.39 × 679,204.04
  4. Step 4: Simplify right side
    1,223,142.21x = 1,146,349,286,995.97
  5. Step 5: Solve for x
    x = 1,146,349,286,995.97/1,223,142.21
  6. Step 6: Final answer
    x = 937,216.68

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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.