Finding the Fourth Proportional to 3,318,278.40, 4,977,417.60 and 1,074,643.20
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Solution
The fourth proportional to 3,318,278.40, 4,977,417.60 and 1,074,643.20 is: 1,611,964.80
Step by Step Solution
- Step 1: Write the proportion equation
3,318,278.40 : 4,977,417.60 = 1,074,643.20 : x - Step 2: Convert to fraction form
3,318,278.40/4,977,417.60 = 1,074,643.20/x - Step 3: Cross multiply
3,318,278.40x = 4,977,417.60 × 1,074,643.20 - Step 4: Simplify right side
3,318,278.40x = 5,348,947,977,400.32 - Step 5: Solve for x
x = 5,348,947,977,400.32/3,318,278.40 - Step 6: Final answer
x = 1,611,964.80
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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.