Finding the Fourth Proportional to 1,428,578.36, 1,970,876.94 and 816,402.71
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Solution
The fourth proportional to 1,428,578.36, 1,970,876.94 and 816,402.71 is: 1,126,315.02
Step by Step Solution
- Step 1: Write the proportion equation
1,428,578.36 : 1,970,876.94 = 816,402.71 : x - Step 2: Convert to fraction form
1,428,578.36/1,970,876.94 = 816,402.71/x - Step 3: Cross multiply
1,428,578.36x = 1,970,876.94 × 816,402.71 - Step 4: Simplify right side
1,428,578.36x = 1,609,029,265,038.12 - Step 5: Solve for x
x = 1,609,029,265,038.12/1,428,578.36 - Step 6: Final answer
x = 1,126,315.02
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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.