Home / 1,131,313.16-1,561,218.26-666,187.21

Finding the Fourth Proportional to 1,131,313.16, 1,561,218.26 and 666,187.21

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Solution

The fourth proportional to 1,131,313.16, 1,561,218.26 and 666,187.21 is: 919,341.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,313.16 : 1,561,218.26 = 666,187.21 : x
  2. Step 2: Convert to fraction form
    1,131,313.16/1,561,218.26 = 666,187.21/x
  3. Step 3: Cross multiply
    1,131,313.16x = 1,561,218.26 × 666,187.21
  4. Step 4: Simplify right side
    1,131,313.16x = 1,040,063,635,451.04
  5. Step 5: Solve for x
    x = 1,040,063,635,451.04/1,131,313.16
  6. Step 6: Final answer
    x = 919,341.94

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Double scale
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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.