Finding the Fourth Proportional to 1,274,495.21, 1,911,287.49 and 421,409.39
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Solution
The fourth proportional to 1,274,495.21, 1,911,287.49 and 421,409.39 is: 631,963.53
Step by Step Solution
- Step 1: Write the proportion equation
1,274,495.21 : 1,911,287.49 = 421,409.39 : x - Step 2: Convert to fraction form
1,274,495.21/1,911,287.49 = 421,409.39/x - Step 3: Cross multiply
1,274,495.21x = 1,911,287.49 × 421,409.39 - Step 4: Simplify right side
1,274,495.21x = 805,434,486,509.24 - Step 5: Solve for x
x = 805,434,486,509.24/1,274,495.21 - Step 6: Final answer
x = 631,963.53
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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.