Home / 315,789.12-469,622.25-305,822.07

Finding the Fourth Proportional to 315,789.12, 469,622.25 and 305,822.07

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Solution

The fourth proportional to 315,789.12, 469,622.25 and 305,822.07 is: 454,799.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,789.12 : 469,622.25 = 305,822.07 : x
  2. Step 2: Convert to fraction form
    315,789.12/469,622.25 = 305,822.07/x
  3. Step 3: Cross multiply
    315,789.12x = 469,622.25 × 305,822.07
  4. Step 4: Simplify right side
    315,789.12x = 143,620,848,613.06
  5. Step 5: Solve for x
    x = 143,620,848,613.06/315,789.12
  6. Step 6: Final answer
    x = 454,799.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.