Finding the Fourth Proportional to 1,428,456.20, 1,971,263.70 and 783,887.13
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Solution
The fourth proportional to 1,428,456.20, 1,971,263.70 and 783,887.13 is: 1,081,761.03
Step by Step Solution
- Step 1: Write the proportion equation
1,428,456.20 : 1,971,263.70 = 783,887.13 : x - Step 2: Convert to fraction form
1,428,456.20/1,971,263.70 = 783,887.13/x - Step 3: Cross multiply
1,428,456.20x = 1,971,263.70 × 783,887.13 - Step 4: Simplify right side
1,428,456.20x = 1,545,248,244,266.18 - Step 5: Solve for x
x = 1,545,248,244,266.18/1,428,456.20 - Step 6: Final answer
x = 1,081,761.03
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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.