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Finding the Fourth Proportional to 622,908.67, 859,640.43 and 347,266.45

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Solution

The fourth proportional to 622,908.67, 859,640.43 and 347,266.45 is: 479,242.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,908.67 : 859,640.43 = 347,266.45 : x
  2. Step 2: Convert to fraction form
    622,908.67/859,640.43 = 347,266.45/x
  3. Step 3: Cross multiply
    622,908.67x = 859,640.43 × 347,266.45
  4. Step 4: Simplify right side
    622,908.67x = 298,524,280,402.57
  5. Step 5: Solve for x
    x = 298,524,280,402.57/622,908.67
  6. Step 6: Final answer
    x = 479,242.46

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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.