Finding the Fourth Proportional to 1,868,639.88, 2,578,722.84 and 1,009,200.18
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Solution
The fourth proportional to 1,868,639.88, 2,578,722.84 and 1,009,200.18 is: 1,392,696.14
Step by Step Solution
- Step 1: Write the proportion equation
1,868,639.88 : 2,578,722.84 = 1,009,200.18 : x - Step 2: Convert to fraction form
1,868,639.88/2,578,722.84 = 1,009,200.18/x - Step 3: Cross multiply
1,868,639.88x = 2,578,722.84 × 1,009,200.18 - Step 4: Simplify right side
1,868,639.88x = 2,602,447,554,298.11 - Step 5: Solve for x
x = 2,602,447,554,298.11/1,868,639.88 - Step 6: Final answer
x = 1,392,696.14
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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.