Finding the Fourth Proportional to 4,158,021.60, 6,236,449.20 and 1,318,420.80
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Solution
The fourth proportional to 4,158,021.60, 6,236,449.20 and 1,318,420.80 is: 1,977,446.28
Step by Step Solution
- Step 1: Write the proportion equation
4,158,021.60 : 6,236,449.20 = 1,318,420.80 : x - Step 2: Convert to fraction form
4,158,021.60/6,236,449.20 = 1,318,420.80/x - Step 3: Cross multiply
4,158,021.60x = 6,236,449.20 × 1,318,420.80 - Step 4: Simplify right side
4,158,021.60x = 8,222,264,343,423.36 - Step 5: Solve for x
x = 8,222,264,343,423.36/4,158,021.60 - Step 6: Final answer
x = 1,977,446.28
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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.