Finding the Fourth Proportional to 828,941.80, 1,243,412.70 and 815,117.80
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Solution
The fourth proportional to 828,941.80, 1,243,412.70 and 815,117.80 is: 1,222,676.70
Step by Step Solution
- Step 1: Write the proportion equation
828,941.80 : 1,243,412.70 = 815,117.80 : x - Step 2: Convert to fraction form
828,941.80/1,243,412.70 = 815,117.80/x - Step 3: Cross multiply
828,941.80x = 1,243,412.70 × 815,117.80 - Step 4: Simplify right side
828,941.80x = 1,013,527,824,516.06 - Step 5: Solve for x
x = 1,013,527,824,516.06/828,941.80 - Step 6: Final answer
x = 1,222,676.70
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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.