Home / 823,127.85-1,240,861.23-768,261.51

Finding the Fourth Proportional to 823,127.85, 1,240,861.23 and 768,261.51

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Solution

The fourth proportional to 823,127.85, 1,240,861.23 and 768,261.51 is: 1,158,150.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,127.85 : 1,240,861.23 = 768,261.51 : x
  2. Step 2: Convert to fraction form
    823,127.85/1,240,861.23 = 768,261.51/x
  3. Step 3: Cross multiply
    823,127.85x = 1,240,861.23 × 768,261.51
  4. Step 4: Simplify right side
    823,127.85x = 953,305,922,260.26
  5. Step 5: Solve for x
    x = 953,305,922,260.26/823,127.85
  6. Step 6: Final answer
    x = 1,158,150.49

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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 (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.