Home / 1,131,312.89-1,561,217.89-666,186.95

Finding the Fourth Proportional to 1,131,312.89, 1,561,217.89 and 666,186.95

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Solution

The fourth proportional to 1,131,312.89, 1,561,217.89 and 666,186.95 is: 919,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,312.89 : 1,561,217.89 = 666,186.95 : x
  2. Step 2: Convert to fraction form
    1,131,312.89/1,561,217.89 = 666,186.95/x
  3. Step 3: Cross multiply
    1,131,312.89x = 1,561,217.89 × 666,186.95
  4. Step 4: Simplify right side
    1,131,312.89x = 1,040,062,973,287.51
  5. Step 5: Solve for x
    x = 1,040,062,973,287.51/1,131,312.89
  6. Step 6: Final answer
    x = 919,341.57

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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.