Finding the Fourth Proportional to 10,579,631.60, 15,869,447.40 and 7,178,409.20
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Solution
The fourth proportional to 10,579,631.60, 15,869,447.40 and 7,178,409.20 is: 10,767,613.80
Step by Step Solution
- Step 1: Write the proportion equation
10,579,631.60 : 15,869,447.40 = 7,178,409.20 : x - Step 2: Convert to fraction form
10,579,631.60/15,869,447.40 = 7,178,409.20/x - Step 3: Cross multiply
10,579,631.60x = 15,869,447.40 × 7,178,409.20 - Step 4: Simplify right side
10,579,631.60x = 113,917,387,215,076.08 - Step 5: Solve for x
x = 113,917,387,215,076.08/10,579,631.60 - Step 6: Final answer
x = 10,767,613.80
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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.