Finding the Fourth Proportional to 8,702,174.78, 12,009,201.21 and 4,782,174.62
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Solution
The fourth proportional to 8,702,174.78, 12,009,201.21 and 4,782,174.62 is: 6,599,510.89
Step by Step Solution
- Step 1: Write the proportion equation
8,702,174.78 : 12,009,201.21 = 4,782,174.62 : x - Step 2: Convert to fraction form
8,702,174.78/12,009,201.21 = 4,782,174.62/x - Step 3: Cross multiply
8,702,174.78x = 12,009,201.21 × 4,782,174.62 - Step 4: Simplify right side
8,702,174.78x = 57,430,097,232,935.30 - Step 5: Solve for x
x = 57,430,097,232,935.30/8,702,174.78 - Step 6: Final answer
x = 6,599,510.89
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1.5x scale
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.