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Finding the Fourth Proportional to 620,577.31, 930,392.38 and 320,866.56

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Solution

The fourth proportional to 620,577.31, 930,392.38 and 320,866.56 is: 481,054.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,577.31 : 930,392.38 = 320,866.56 : x
  2. Step 2: Convert to fraction form
    620,577.31/930,392.38 = 320,866.56/x
  3. Step 3: Cross multiply
    620,577.31x = 930,392.38 × 320,866.56
  4. Step 4: Simplify right side
    620,577.31x = 298,531,802,420.81
  5. Step 5: Solve for x
    x = 298,531,802,420.81/620,577.31
  6. Step 6: Final answer
    x = 481,054.98

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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.