Home / 449,465.22-620,387.10-258,540.12

Finding the Fourth Proportional to 449,465.22, 620,387.10 and 258,540.12

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Solution

The fourth proportional to 449,465.22, 620,387.10 and 258,540.12 is: 356,857.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,465.22 : 620,387.10 = 258,540.12 : x
  2. Step 2: Convert to fraction form
    449,465.22/620,387.10 = 258,540.12/x
  3. Step 3: Cross multiply
    449,465.22x = 620,387.10 × 258,540.12
  4. Step 4: Simplify right side
    449,465.22x = 160,394,955,280.45
  5. Step 5: Solve for x
    x = 160,394,955,280.45/449,465.22
  6. Step 6: Final answer
    x = 356,857.32

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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.