Finding the Fourth Proportional to 7,887,511.20, 11,831,266.80 and 5,194,876.80
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Solution
The fourth proportional to 7,887,511.20, 11,831,266.80 and 5,194,876.80 is: 7,792,315.20
Step by Step Solution
- Step 1: Write the proportion equation
7,887,511.20 : 11,831,266.80 = 5,194,876.80 : x - Step 2: Convert to fraction form
7,887,511.20/11,831,266.80 = 5,194,876.80/x - Step 3: Cross multiply
7,887,511.20x = 11,831,266.80 × 5,194,876.80 - Step 4: Simplify right side
7,887,511.20x = 61,461,973,413,930.24 - Step 5: Solve for x
x = 61,461,973,413,930.24/7,887,511.20 - Step 6: Final answer
x = 7,792,315.20
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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.