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Finding the Fourth Proportional to 449,490.58, 620,315.85 and 258,504.12

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Solution

The fourth proportional to 449,490.58, 620,315.85 and 258,504.12 is: 356,746.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,490.58 : 620,315.85 = 258,504.12 : x
  2. Step 2: Convert to fraction form
    449,490.58/620,315.85 = 258,504.12/x
  3. Step 3: Cross multiply
    449,490.58x = 620,315.85 × 258,504.12
  4. Step 4: Simplify right side
    449,490.58x = 160,354,203,895.69
  5. Step 5: Solve for x
    x = 160,354,203,895.69/449,490.58
  6. Step 6: Final answer
    x = 356,746.53

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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.