Finding the Fourth Proportional to 1,247,781.09, 1,721,519.08 and 1,017,941.06
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Solution
The fourth proportional to 1,247,781.09, 1,721,519.08 and 1,017,941.06 is: 1,404,416.99
Step by Step Solution
- Step 1: Write the proportion equation
1,247,781.09 : 1,721,519.08 = 1,017,941.06 : x - Step 2: Convert to fraction form
1,247,781.09/1,721,519.08 = 1,017,941.06/x - Step 3: Cross multiply
1,247,781.09x = 1,721,519.08 × 1,017,941.06 - Step 4: Simplify right side
1,247,781.09x = 1,752,404,957,105.43 - Step 5: Solve for x
x = 1,752,404,957,105.43/1,247,781.09 - Step 6: Final answer
x = 1,404,416.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.