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Finding the Fourth Proportional to 449,752.55, 620,598.53 and 288,825.57

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Solution

The fourth proportional to 449,752.55, 620,598.53 and 288,825.57 is: 398,540.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,752.55 : 620,598.53 = 288,825.57 : x
  2. Step 2: Convert to fraction form
    449,752.55/620,598.53 = 288,825.57/x
  3. Step 3: Cross multiply
    449,752.55x = 620,598.53 × 288,825.57
  4. Step 4: Simplify right side
    449,752.55x = 179,244,724,890.48
  5. Step 5: Solve for x
    x = 179,244,724,890.48/449,752.55
  6. Step 6: Final answer
    x = 398,540.77

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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.