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Finding the Fourth Proportional to 378,407.33, 521,659.52 and 297,694.67

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Solution

The fourth proportional to 378,407.33, 521,659.52 and 297,694.67 is: 410,391.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,407.33 : 521,659.52 = 297,694.67 : x
  2. Step 2: Convert to fraction form
    378,407.33/521,659.52 = 297,694.67/x
  3. Step 3: Cross multiply
    378,407.33x = 521,659.52 × 297,694.67
  4. Step 4: Simplify right side
    378,407.33x = 155,295,258,658.76
  5. Step 5: Solve for x
    x = 155,295,258,658.76/378,407.33
  6. Step 6: Final answer
    x = 410,391.79

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1.5x scale

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.