Home / 1,239,653.60-1,859,998.80-398,463.20

Finding the Fourth Proportional to 1,239,653.60, 1,859,998.80 and 398,463.20

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Solution

The fourth proportional to 1,239,653.60, 1,859,998.80 and 398,463.20 is: 597,861.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,653.60 : 1,859,998.80 = 398,463.20 : x
  2. Step 2: Convert to fraction form
    1,239,653.60/1,859,998.80 = 398,463.20/x
  3. Step 3: Cross multiply
    1,239,653.60x = 1,859,998.80 × 398,463.20
  4. Step 4: Simplify right side
    1,239,653.60x = 741,141,073,844.16
  5. Step 5: Solve for x
    x = 741,141,073,844.16/1,239,653.60
  6. Step 6: Final answer
    x = 597,861.43

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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.