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Finding the Fourth Proportional to 672,728.43, 928,361.48 and 370,922.43

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Solution

The fourth proportional to 672,728.43, 928,361.48 and 370,922.43 is: 511,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,728.43 : 928,361.48 = 370,922.43 : x
  2. Step 2: Convert to fraction form
    672,728.43/928,361.48 = 370,922.43/x
  3. Step 3: Cross multiply
    672,728.43x = 928,361.48 × 370,922.43
  4. Step 4: Simplify right side
    672,728.43x = 344,350,094,225.38
  5. Step 5: Solve for x
    x = 344,350,094,225.38/672,728.43
  6. Step 6: Final answer
    x = 511,870.88

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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.