Finding the Fourth Proportional to 1,421,268.84, 1,961,376.66 and 776,716.20
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Solution
The fourth proportional to 1,421,268.84, 1,961,376.66 and 776,716.20 is: 1,071,882.38
Step by Step Solution
- Step 1: Write the proportion equation
1,421,268.84 : 1,961,376.66 = 776,716.20 : x - Step 2: Convert to fraction form
1,421,268.84/1,961,376.66 = 776,716.20/x - Step 3: Cross multiply
1,421,268.84x = 1,961,376.66 × 776,716.20 - Step 4: Simplify right side
1,421,268.84x = 1,523,433,026,123.89 - Step 5: Solve for x
x = 1,523,433,026,123.89/1,421,268.84 - Step 6: Final answer
x = 1,071,882.38
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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.