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Finding the Fourth Proportional to 628,998.64, 867,882.72 and 374,300.08

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Solution

The fourth proportional to 628,998.64, 867,882.72 and 374,300.08 is: 516,453.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,998.64 : 867,882.72 = 374,300.08 : x
  2. Step 2: Convert to fraction form
    628,998.64/867,882.72 = 374,300.08/x
  3. Step 3: Cross multiply
    628,998.64x = 867,882.72 × 374,300.08
  4. Step 4: Simplify right side
    628,998.64x = 324,848,571,526.62
  5. Step 5: Solve for x
    x = 324,848,571,526.62/628,998.64
  6. Step 6: Final answer
    x = 516,453.54

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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.