Home / 714,857.46-986,464.89-392,611.38

Finding the Fourth Proportional to 714,857.46, 986,464.89 and 392,611.38

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Solution

The fourth proportional to 714,857.46, 986,464.89 and 392,611.38 is: 541,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,857.46 : 986,464.89 = 392,611.38 : x
  2. Step 2: Convert to fraction form
    714,857.46/986,464.89 = 392,611.38/x
  3. Step 3: Cross multiply
    714,857.46x = 986,464.89 × 392,611.38
  4. Step 4: Simplify right side
    714,857.46x = 387,297,341,784.45
  5. Step 5: Solve for x
    x = 387,297,341,784.45/714,857.46
  6. Step 6: Final answer
    x = 541,782.61

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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.