Home / 957,353.78-1,321,131.11-521,775.06

Finding the Fourth Proportional to 957,353.78, 1,321,131.11 and 521,775.06

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Solution

The fourth proportional to 957,353.78, 1,321,131.11 and 521,775.06 is: 720,040.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    957,353.78 : 1,321,131.11 = 521,775.06 : x
  2. Step 2: Convert to fraction form
    957,353.78/1,321,131.11 = 521,775.06/x
  3. Step 3: Cross multiply
    957,353.78x = 1,321,131.11 × 521,775.06
  4. Step 4: Simplify right side
    957,353.78x = 689,333,261,579.24
  5. Step 5: Solve for x
    x = 689,333,261,579.24/957,353.78
  6. Step 6: Final answer
    x = 720,040.26

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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.