Finding the Fourth Proportional to 1,284,484.06, 1,918,913.68 and 831,514.78
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Solution
The fourth proportional to 1,284,484.06, 1,918,913.68 and 831,514.78 is: 1,242,214.78
Step by Step Solution
- Step 1: Write the proportion equation
1,284,484.06 : 1,918,913.68 = 831,514.78 : x - Step 2: Convert to fraction form
1,284,484.06/1,918,913.68 = 831,514.78/x - Step 3: Cross multiply
1,284,484.06x = 1,918,913.68 × 831,514.78 - Step 4: Simplify right side
1,284,484.06x = 1,595,605,086,464.19 - Step 5: Solve for x
x = 1,595,605,086,464.19/1,284,484.06 - Step 6: Final answer
x = 1,242,214.78
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.