Home / 1,321,240.75-1,823,314.07-717,628.75

Finding the Fourth Proportional to 1,321,240.75, 1,823,314.07 and 717,628.75

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Solution

The fourth proportional to 1,321,240.75, 1,823,314.07 and 717,628.75 is: 990,328.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,240.75 : 1,823,314.07 = 717,628.75 : x
  2. Step 2: Convert to fraction form
    1,321,240.75/1,823,314.07 = 717,628.75/x
  3. Step 3: Cross multiply
    1,321,240.75x = 1,823,314.07 × 717,628.75
  4. Step 4: Simplify right side
    1,321,240.75x = 1,308,462,596,911.51
  5. Step 5: Solve for x
    x = 1,308,462,596,911.51/1,321,240.75
  6. Step 6: Final answer
    x = 990,328.67

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Double scale
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Similar ratio
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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.