Home / 449,660.12-620,237.13-288,259.52

Finding the Fourth Proportional to 449,660.12, 620,237.13 and 288,259.52

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Solution

The fourth proportional to 449,660.12, 620,237.13 and 288,259.52 is: 397,609.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,660.12 : 620,237.13 = 288,259.52 : x
  2. Step 2: Convert to fraction form
    449,660.12/620,237.13 = 288,259.52/x
  3. Step 3: Cross multiply
    449,660.12x = 620,237.13 × 288,259.52
  4. Step 4: Simplify right side
    449,660.12x = 178,789,257,379.98
  5. Step 5: Solve for x
    x = 178,789,257,379.98/449,660.12
  6. Step 6: Final answer
    x = 397,609.77

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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.