Finding the Fourth Proportional to 1,209,428.73, 1,668,635.91 and 686,053.08
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Solution
The fourth proportional to 1,209,428.73, 1,668,635.91 and 686,053.08 is: 946,540.11
Step by Step Solution
- Step 1: Write the proportion equation
1,209,428.73 : 1,668,635.91 = 686,053.08 : x - Step 2: Convert to fraction form
1,209,428.73/1,668,635.91 = 686,053.08/x - Step 3: Cross multiply
1,209,428.73x = 1,668,635.91 × 686,053.08 - Step 4: Simplify right side
1,209,428.73x = 1,144,772,805,454.10 - Step 5: Solve for x
x = 1,144,772,805,454.10/1,209,428.73 - Step 6: Final answer
x = 946,540.11
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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.