Finding the Fourth Proportional to 1,578,431.44, 2,178,827.74 and 1,034,602.28
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Solution
The fourth proportional to 1,578,431.44, 2,178,827.74 and 1,034,602.28 is: 1,428,139.41
Step by Step Solution
- Step 1: Write the proportion equation
1,578,431.44 : 2,178,827.74 = 1,034,602.28 : x - Step 2: Convert to fraction form
1,578,431.44/2,178,827.74 = 1,034,602.28/x - Step 3: Cross multiply
1,578,431.44x = 2,178,827.74 × 1,034,602.28 - Step 4: Simplify right side
1,578,431.44x = 2,254,220,147,531.25 - Step 5: Solve for x
x = 2,254,220,147,531.25/1,578,431.44 - Step 6: Final answer
x = 1,428,139.41
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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.