Finding the Fourth Proportional to 5,281,539.21, 7,288,122.36 and 3,216,325.95
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Solution
The fourth proportional to 5,281,539.21, 7,288,122.36 and 3,216,325.95 is: 4,438,285.16
Step by Step Solution
- Step 1: Write the proportion equation
5,281,539.21 : 7,288,122.36 = 3,216,325.95 : x - Step 2: Convert to fraction form
5,281,539.21/7,288,122.36 = 3,216,325.95/x - Step 3: Cross multiply
5,281,539.21x = 7,288,122.36 × 3,216,325.95 - Step 4: Simplify right side
5,281,539.21x = 23,440,977,073,243.25 - Step 5: Solve for x
x = 23,440,977,073,243.25/5,281,539.21 - Step 6: Final answer
x = 4,438,285.16
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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.