Finding the Fourth Proportional to 1,278,367.74, 1,918,284.26 and 520,069.23
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Solution
The fourth proportional to 1,278,367.74, 1,918,284.26 and 520,069.23 is: 780,401.90
Step by Step Solution
- Step 1: Write the proportion equation
1,278,367.74 : 1,918,284.26 = 520,069.23 : x - Step 2: Convert to fraction form
1,278,367.74/1,918,284.26 = 520,069.23/x - Step 3: Cross multiply
1,278,367.74x = 1,918,284.26 × 520,069.23 - Step 4: Simplify right side
1,278,367.74x = 997,640,615,418.97 - Step 5: Solve for x
x = 997,640,615,418.97/1,278,367.74 - Step 6: Final answer
x = 780,401.90
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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.