Home / 449,811.42-621,204.57-389,090.58

Finding the Fourth Proportional to 449,811.42, 621,204.57 and 389,090.58

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Solution

The fourth proportional to 449,811.42, 621,204.57 and 389,090.58 is: 537,347.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,811.42 : 621,204.57 = 389,090.58 : x
  2. Step 2: Convert to fraction form
    449,811.42/621,204.57 = 389,090.58/x
  3. Step 3: Cross multiply
    449,811.42x = 621,204.57 × 389,090.58
  4. Step 4: Simplify right side
    449,811.42x = 241,704,846,439.95
  5. Step 5: Solve for x
    x = 241,704,846,439.95/449,811.42
  6. Step 6: Final answer
    x = 537,347.07

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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.