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Finding the Fourth Proportional to 687,749.35, 949,075.62 and 412,262.82

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Solution

The fourth proportional to 687,749.35, 949,075.62 and 412,262.82 is: 568,911.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,749.35 : 949,075.62 = 412,262.82 : x
  2. Step 2: Convert to fraction form
    687,749.35/949,075.62 = 412,262.82/x
  3. Step 3: Cross multiply
    687,749.35x = 949,075.62 × 412,262.82
  4. Step 4: Simplify right side
    687,749.35x = 391,268,591,494.45
  5. Step 5: Solve for x
    x = 391,268,591,494.45/687,749.35
  6. Step 6: Final answer
    x = 568,911.61

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.