Home / 449,749.47-620,653.22-256,157.15

Finding the Fourth Proportional to 449,749.47, 620,653.22 and 256,157.15

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Solution

The fourth proportional to 449,749.47, 620,653.22 and 256,157.15 is: 353,496.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,749.47 : 620,653.22 = 256,157.15 : x
  2. Step 2: Convert to fraction form
    449,749.47/620,653.22 = 256,157.15/x
  3. Step 3: Cross multiply
    449,749.47x = 620,653.22 × 256,157.15
  4. Step 4: Simplify right side
    449,749.47x = 158,984,755,589.47
  5. Step 5: Solve for x
    x = 158,984,755,589.47/449,749.47
  6. Step 6: Final answer
    x = 353,496.26

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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.