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Finding the Fourth Proportional to 441,018.58, 607,961.44 and 311,728.95

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Solution

The fourth proportional to 441,018.58, 607,961.44 and 311,728.95 is: 429,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,018.58 : 607,961.44 = 311,728.95 : x
  2. Step 2: Convert to fraction form
    441,018.58/607,961.44 = 311,728.95/x
  3. Step 3: Cross multiply
    441,018.58x = 607,961.44 × 311,728.95
  4. Step 4: Simplify right side
    441,018.58x = 189,519,179,134.72
  5. Step 5: Solve for x
    x = 189,519,179,134.72/441,018.58
  6. Step 6: Final answer
    x = 429,730.60

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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.