Finding the Fourth Proportional to 420,722,326.44, 580,599,728.82 and 235,091,166.12
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Solution
The fourth proportional to 420,722,326.44, 580,599,728.82 and 235,091,166.12 is: 324,427,439.95
Step by Step Solution
- Step 1: Write the proportion equation
420,722,326.44 : 580,599,728.82 = 235,091,166.12 : x - Step 2: Convert to fraction form
420,722,326.44/580,599,728.82 = 235,091,166.12/x - Step 3: Cross multiply
420,722,326.44x = 580,599,728.82 × 235,091,166.12 - Step 4: Simplify right side
420,722,326.44x = 136,493,867,297,249,584 - Step 5: Solve for x
x = 136,493,867,297,249,584/420,722,326.44 - Step 6: Final answer
x = 324,427,439.95
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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.