Finding the Fourth Proportional to 1,428,402.10, 1,971,193.68 and 783,862.78
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Solution
The fourth proportional to 1,428,402.10, 1,971,193.68 and 783,862.78 is: 1,081,729.97
Step by Step Solution
- Step 1: Write the proportion equation
1,428,402.10 : 1,971,193.68 = 783,862.78 : x - Step 2: Convert to fraction form
1,428,402.10/1,971,193.68 = 783,862.78/x - Step 3: Cross multiply
1,428,402.10x = 1,971,193.68 × 783,862.78 - Step 4: Simplify right side
1,428,402.10x = 1,545,145,357,923.23 - Step 5: Solve for x
x = 1,545,145,357,923.23/1,428,402.10 - Step 6: Final answer
x = 1,081,729.97
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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.