Home / 1,228,738.56-1,695,678-684,859.20

Finding the Fourth Proportional to 1,228,738.56, 1,695,678 and 684,859.20

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Solution

The fourth proportional to 1,228,738.56, 1,695,678 and 684,859.20 is: 945,116.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,738.56 : 1,695,678 = 684,859.20 : x
  2. Step 2: Convert to fraction form
    1,228,738.56/1,695,678 = 684,859.20/x
  3. Step 3: Cross multiply
    1,228,738.56x = 1,695,678 × 684,859.20
  4. Step 4: Simplify right side
    1,228,738.56x = 1,161,300,678,537.60
  5. Step 5: Solve for x
    x = 1,161,300,678,537.60/1,228,738.56
  6. Step 6: Final answer
    x = 945,116.17

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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.