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Finding the Fourth Proportional to 620,745.06, 856,600.61 and 362,645.94

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Solution

The fourth proportional to 620,745.06, 856,600.61 and 362,645.94 is: 500,435.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,745.06 : 856,600.61 = 362,645.94 : x
  2. Step 2: Convert to fraction form
    620,745.06/856,600.61 = 362,645.94/x
  3. Step 3: Cross multiply
    620,745.06x = 856,600.61 × 362,645.94
  4. Step 4: Simplify right side
    620,745.06x = 310,642,733,418.02
  5. Step 5: Solve for x
    x = 310,642,733,418.02/620,745.06
  6. Step 6: Final answer
    x = 500,435.29

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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.