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Finding the Fourth Proportional to 620,240.67, 855,883.40 and 351,968.67

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Solution

The fourth proportional to 620,240.67, 855,883.40 and 351,968.67 is: 485,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,240.67 : 855,883.40 = 351,968.67 : x
  2. Step 2: Convert to fraction form
    620,240.67/855,883.40 = 351,968.67/x
  3. Step 3: Cross multiply
    620,240.67x = 855,883.40 × 351,968.67
  4. Step 4: Simplify right side
    620,240.67x = 301,244,140,213.24
  5. Step 5: Solve for x
    x = 301,244,140,213.24/620,240.67
  6. Step 6: Final answer
    x = 485,689.11

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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.