Home / 441,021.20-607,965.06-311,731.58

Finding the Fourth Proportional to 441,021.20, 607,965.06 and 311,731.58

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Solution

The fourth proportional to 441,021.20, 607,965.06 and 311,731.58 is: 429,734.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,021.20 : 607,965.06 = 311,731.58 : x
  2. Step 2: Convert to fraction form
    441,021.20/607,965.06 = 311,731.58/x
  3. Step 3: Cross multiply
    441,021.20x = 607,965.06 × 311,731.58
  4. Step 4: Simplify right side
    441,021.20x = 189,521,905,698.77
  5. Step 5: Solve for x
    x = 189,521,905,698.77/441,021.20
  6. Step 6: Final answer
    x = 429,734.23

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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.