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Finding the Fourth Proportional to 413,790.20, 620,102.10 and 255,548.60

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Solution

The fourth proportional to 413,790.20, 620,102.10 and 255,548.60 is: 382,962.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,790.20 : 620,102.10 = 255,548.60 : x
  2. Step 2: Convert to fraction form
    413,790.20/620,102.10 = 255,548.60/x
  3. Step 3: Cross multiply
    413,790.20x = 620,102.10 × 255,548.60
  4. Step 4: Simplify right side
    413,790.20x = 158,466,223,512.06
  5. Step 5: Solve for x
    x = 158,466,223,512.06/413,790.20
  6. Step 6: Final answer
    x = 382,962.73

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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.