Home / 561,438.25-774,786.78-306,789.43

Finding the Fourth Proportional to 561,438.25, 774,786.78 and 306,789.43

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Solution

The fourth proportional to 561,438.25, 774,786.78 and 306,789.43 is: 423,370.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,438.25 : 774,786.78 = 306,789.43 : x
  2. Step 2: Convert to fraction form
    561,438.25/774,786.78 = 306,789.43/x
  3. Step 3: Cross multiply
    561,438.25x = 774,786.78 × 306,789.43
  4. Step 4: Simplify right side
    561,438.25x = 237,696,394,607.74
  5. Step 5: Solve for x
    x = 237,696,394,607.74/561,438.25
  6. Step 6: Final answer
    x = 423,370.50

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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.