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Finding the Fourth Proportional to 449,698.09, 620,592.25 and 245,761.63

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Solution

The fourth proportional to 449,698.09, 620,592.25 and 245,761.63 is: 339,155.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,698.09 : 620,592.25 = 245,761.63 : x
  2. Step 2: Convert to fraction form
    449,698.09/620,592.25 = 245,761.63/x
  3. Step 3: Cross multiply
    449,698.09x = 620,592.25 × 245,761.63
  4. Step 4: Simplify right side
    449,698.09x = 152,517,762,925.37
  5. Step 5: Solve for x
    x = 152,517,762,925.37/449,698.09
  6. Step 6: Final answer
    x = 339,155.91

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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.