Home / 553,249.23-763,556.69-311,579.04

Finding the Fourth Proportional to 553,249.23, 763,556.69 and 311,579.04

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Solution

The fourth proportional to 553,249.23, 763,556.69 and 311,579.04 is: 430,020.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,249.23 : 763,556.69 = 311,579.04 : x
  2. Step 2: Convert to fraction form
    553,249.23/763,556.69 = 311,579.04/x
  3. Step 3: Cross multiply
    553,249.23x = 763,556.69 × 311,579.04
  4. Step 4: Simplify right side
    553,249.23x = 237,908,260,455.78
  5. Step 5: Solve for x
    x = 237,908,260,455.78/553,249.23
  6. Step 6: Final answer
    x = 430,020.05

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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.