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Finding the Fourth Proportional to 449,504.90, 620,335.64 and 258,518.46

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Solution

The fourth proportional to 449,504.90, 620,335.64 and 258,518.46 is: 356,766.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,504.90 : 620,335.64 = 258,518.46 : x
  2. Step 2: Convert to fraction form
    449,504.90/620,335.64 = 258,518.46/x
  3. Step 3: Cross multiply
    449,504.90x = 620,335.64 × 258,518.46
  4. Step 4: Simplify right side
    449,504.90x = 160,368,214,335.91
  5. Step 5: Solve for x
    x = 160,368,214,335.91/449,504.90
  6. Step 6: Final answer
    x = 356,766.33

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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.