Home / 399,127.20-597,999.60-258,813.60

Finding the Fourth Proportional to 399,127.20, 597,999.60 and 258,813.60

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Solution

The fourth proportional to 399,127.20, 597,999.60 and 258,813.60 is: 387,772.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,127.20 : 597,999.60 = 258,813.60 : x
  2. Step 2: Convert to fraction form
    399,127.20/597,999.60 = 258,813.60/x
  3. Step 3: Cross multiply
    399,127.20x = 597,999.60 × 258,813.60
  4. Step 4: Simplify right side
    399,127.20x = 154,770,429,274.56
  5. Step 5: Solve for x
    x = 154,770,429,274.56/399,127.20
  6. Step 6: Final answer
    x = 387,772.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.