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Finding the Fourth Proportional to 449,364.47, 620,119.81 and 245,415.44

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Solution

The fourth proportional to 449,364.47, 620,119.81 and 245,415.44 is: 338,671.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,364.47 : 620,119.81 = 245,415.44 : x
  2. Step 2: Convert to fraction form
    449,364.47/620,119.81 = 245,415.44/x
  3. Step 3: Cross multiply
    449,364.47x = 620,119.81 × 245,415.44
  4. Step 4: Simplify right side
    449,364.47x = 152,186,976,500.47
  5. Step 5: Solve for x
    x = 152,186,976,500.47/449,364.47
  6. Step 6: Final answer
    x = 338,671.59

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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.