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Finding the Fourth Proportional to 672,728.56, 928,361.64 and 370,922.80

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Solution

The fourth proportional to 672,728.56, 928,361.64 and 370,922.80 is: 511,871.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,728.56 : 928,361.64 = 370,922.80 : x
  2. Step 2: Convert to fraction form
    672,728.56/928,361.64 = 370,922.80/x
  3. Step 3: Cross multiply
    672,728.56x = 928,361.64 × 370,922.80
  4. Step 4: Simplify right side
    672,728.56x = 344,350,498,921.39
  5. Step 5: Solve for x
    x = 344,350,498,921.39/672,728.56
  6. Step 6: Final answer
    x = 511,871.38

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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.