Home / 689,648.21-951,571.91-403,112.94

Finding the Fourth Proportional to 689,648.21, 951,571.91 and 403,112.94

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Solution

The fourth proportional to 689,648.21, 951,571.91 and 403,112.94 is: 556,212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,648.21 : 951,571.91 = 403,112.94 : x
  2. Step 2: Convert to fraction form
    689,648.21/951,571.91 = 403,112.94/x
  3. Step 3: Cross multiply
    689,648.21x = 951,571.91 × 403,112.94
  4. Step 4: Simplify right side
    689,648.21x = 383,590,950,261.52
  5. Step 5: Solve for x
    x = 383,590,950,261.52/689,648.21
  6. Step 6: Final answer
    x = 556,212.49

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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.