Finding the Fourth Proportional to 1,515,578.68, 2,091,349.58 and 836,471.40
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Solution
The fourth proportional to 1,515,578.68, 2,091,349.58 and 836,471.40 is: 1,154,248.30
Step by Step Solution
- Step 1: Write the proportion equation
1,515,578.68 : 2,091,349.58 = 836,471.40 : x - Step 2: Convert to fraction form
1,515,578.68/2,091,349.58 = 836,471.40/x - Step 3: Cross multiply
1,515,578.68x = 2,091,349.58 × 836,471.40 - Step 4: Simplify right side
1,515,578.68x = 1,749,354,111,072.01 - Step 5: Solve for x
x = 1,749,354,111,072.01/1,515,578.68 - Step 6: Final answer
x = 1,154,248.30
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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.