Finding the Fourth Proportional to 1,279,403.36, 1,920,265.80 and 680,868.48
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Solution
The fourth proportional to 1,279,403.36, 1,920,265.80 and 680,868.48 is: 1,021,920.45
Step by Step Solution
- Step 1: Write the proportion equation
1,279,403.36 : 1,920,265.80 = 680,868.48 : x - Step 2: Convert to fraction form
1,279,403.36/1,920,265.80 = 680,868.48/x - Step 3: Cross multiply
1,279,403.36x = 1,920,265.80 × 680,868.48 - Step 4: Simplify right side
1,279,403.36x = 1,307,448,456,441.98 - Step 5: Solve for x
x = 1,307,448,456,441.98/1,279,403.36 - Step 6: Final answer
x = 1,021,920.45
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.