Home / 628,887.43-867,770.29-353,234.70

Finding the Fourth Proportional to 628,887.43, 867,770.29 and 353,234.70

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Solution

The fourth proportional to 628,887.43, 867,770.29 and 353,234.70 is: 487,410.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,887.43 : 867,770.29 = 353,234.70 : x
  2. Step 2: Convert to fraction form
    628,887.43/867,770.29 = 353,234.70/x
  3. Step 3: Cross multiply
    628,887.43x = 867,770.29 × 353,234.70
  4. Step 4: Simplify right side
    628,887.43x = 306,526,578,369.04
  5. Step 5: Solve for x
    x = 306,526,578,369.04/628,887.43
  6. Step 6: Final answer
    x = 487,410.89

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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.