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Finding the Fourth Proportional to 449,863.80, 620,828.76 and 245,928.30

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Solution

The fourth proportional to 449,863.80, 620,828.76 and 245,928.30 is: 339,390.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,863.80 : 620,828.76 = 245,928.30 : x
  2. Step 2: Convert to fraction form
    449,863.80/620,828.76 = 245,928.30/x
  3. Step 3: Cross multiply
    449,863.80x = 620,828.76 × 245,928.30
  4. Step 4: Simplify right side
    449,863.80x = 152,679,361,537.91
  5. Step 5: Solve for x
    x = 152,679,361,537.91/449,863.80
  6. Step 6: Final answer
    x = 339,390.19

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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.