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Finding the Fourth Proportional to 612,571.93, 845,309.25 and 340,629.72

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Solution

The fourth proportional to 612,571.93, 845,309.25 and 340,629.72 is: 470,046.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,571.93 : 845,309.25 = 340,629.72 : x
  2. Step 2: Convert to fraction form
    612,571.93/845,309.25 = 340,629.72/x
  3. Step 3: Cross multiply
    612,571.93x = 845,309.25 × 340,629.72
  4. Step 4: Simplify right side
    612,571.93x = 287,937,449,971.00
  5. Step 5: Solve for x
    x = 287,937,449,971.00/612,571.93
  6. Step 6: Final answer
    x = 470,046.76

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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.