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Finding the Fourth Proportional to 620,573.31, 930,386.39 and 320,862.56

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Solution

The fourth proportional to 620,573.31, 930,386.39 and 320,862.56 is: 481,048.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,573.31 : 930,386.39 = 320,862.56 : x
  2. Step 2: Convert to fraction form
    620,573.31/930,386.39 = 320,862.56/x
  3. Step 3: Cross multiply
    620,573.31x = 930,386.39 × 320,862.56
  4. Step 4: Simplify right side
    620,573.31x = 298,526,152,628.31
  5. Step 5: Solve for x
    x = 298,526,152,628.31/620,573.31
  6. Step 6: Final answer
    x = 481,048.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.