Finding the Fourth Proportional to 1,420,578.43, 2,130,853.06 and 821,158.18
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Solution
The fourth proportional to 1,420,578.43, 2,130,853.06 and 821,158.18 is: 1,231,728.84
Step by Step Solution
- Step 1: Write the proportion equation
1,420,578.43 : 2,130,853.06 = 821,158.18 : x - Step 2: Convert to fraction form
1,420,578.43/2,130,853.06 = 821,158.18/x - Step 3: Cross multiply
1,420,578.43x = 2,130,853.06 × 821,158.18 - Step 4: Simplify right side
1,420,578.43x = 1,749,767,420,597.03 - Step 5: Solve for x
x = 1,749,767,420,597.03/1,420,578.43 - Step 6: Final answer
x = 1,231,728.84
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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.