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Finding the Fourth Proportional to 425,394.06, 636,315.57 and 299,025.42

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Solution

The fourth proportional to 425,394.06, 636,315.57 and 299,025.42 is: 447,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,394.06 : 636,315.57 = 299,025.42 : x
  2. Step 2: Convert to fraction form
    425,394.06/636,315.57 = 299,025.42/x
  3. Step 3: Cross multiply
    425,394.06x = 636,315.57 × 299,025.42
  4. Step 4: Simplify right side
    425,394.06x = 190,274,530,571.79
  5. Step 5: Solve for x
    x = 190,274,530,571.79/425,394.06
  6. Step 6: Final answer
    x = 447,290.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.