Finding the Fourth Proportional to 1,113,998.29, 1,537,342.08 and 678,436.05
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Solution
The fourth proportional to 1,113,998.29, 1,537,342.08 and 678,436.05 is: 936,256.63
Step by Step Solution
- Step 1: Write the proportion equation
1,113,998.29 : 1,537,342.08 = 678,436.05 : x - Step 2: Convert to fraction form
1,113,998.29/1,537,342.08 = 678,436.05/x - Step 3: Cross multiply
1,113,998.29x = 1,537,342.08 × 678,436.05 - Step 4: Simplify right side
1,113,998.29x = 1,042,988,288,253.98 - Step 5: Solve for x
x = 1,042,988,288,253.98/1,113,998.29 - Step 6: Final answer
x = 936,256.63
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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.