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Finding the Fourth Proportional to 449,416.41, 620,209.44 and 245,479.38

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Solution

The fourth proportional to 449,416.41, 620,209.44 and 245,479.38 is: 338,769.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,416.41 : 620,209.44 = 245,479.38 : x
  2. Step 2: Convert to fraction form
    449,416.41/620,209.44 = 245,479.38/x
  3. Step 3: Cross multiply
    449,416.41x = 620,209.44 × 245,479.38
  4. Step 4: Simplify right side
    449,416.41x = 152,248,628,801.35
  5. Step 5: Solve for x
    x = 152,248,628,801.35/449,416.41
  6. Step 6: Final answer
    x = 338,769.63

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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.