Finding the Fourth Proportional to 1,161,918.26, 1,603,495.40 and 645,670.23
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Solution
The fourth proportional to 1,161,918.26, 1,603,495.40 and 645,670.23 is: 891,051.70
Step by Step Solution
- Step 1: Write the proportion equation
1,161,918.26 : 1,603,495.40 = 645,670.23 : x - Step 2: Convert to fraction form
1,161,918.26/1,603,495.40 = 645,670.23/x - Step 3: Cross multiply
1,161,918.26x = 1,603,495.40 × 645,670.23 - Step 4: Simplify right side
1,161,918.26x = 1,035,329,243,721.94 - Step 5: Solve for x
x = 1,035,329,243,721.94/1,161,918.26 - Step 6: Final answer
x = 891,051.70
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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.