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Finding the Fourth Proportional to 620,360.64, 930,032.39 and 220,773.87

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Solution

The fourth proportional to 620,360.64, 930,032.39 and 220,773.87 is: 330,979.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,360.64 : 930,032.39 = 220,773.87 : x
  2. Step 2: Convert to fraction form
    620,360.64/930,032.39 = 220,773.87/x
  3. Step 3: Cross multiply
    620,360.64x = 930,032.39 × 220,773.87
  4. Step 4: Simplify right side
    620,360.64x = 205,326,850,517.58
  5. Step 5: Solve for x
    x = 205,326,850,517.58/620,360.64
  6. Step 6: Final answer
    x = 330,979.82

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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.