Finding the Fourth Proportional to 1,989,159.66, 2,745,523.78 and 1,215,442.03
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Solution
The fourth proportional to 1,989,159.66, 2,745,523.78 and 1,215,442.03 is: 1,677,605.40
Step by Step Solution
- Step 1: Write the proportion equation
1,989,159.66 : 2,745,523.78 = 1,215,442.03 : x - Step 2: Convert to fraction form
1,989,159.66/2,745,523.78 = 1,215,442.03/x - Step 3: Cross multiply
1,989,159.66x = 2,745,523.78 × 1,215,442.03 - Step 4: Simplify right side
1,989,159.66x = 3,337,024,999,615.08 - Step 5: Solve for x
x = 3,337,024,999,615.08/1,989,159.66 - Step 6: Final answer
x = 1,677,605.40
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.