Finding the Fourth Proportional to 1,330,493.40, 1,988,450.62 and 971,421.28
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Solution
The fourth proportional to 1,330,493.40, 1,988,450.62 and 971,421.28 is: 1,451,809.72
Step by Step Solution
- Step 1: Write the proportion equation
1,330,493.40 : 1,988,450.62 = 971,421.28 : x - Step 2: Convert to fraction form
1,330,493.40/1,988,450.62 = 971,421.28/x - Step 3: Cross multiply
1,330,493.40x = 1,988,450.62 × 971,421.28 - Step 4: Simplify right side
1,330,493.40x = 1,931,623,246,497.19 - Step 5: Solve for x
x = 1,931,623,246,497.19/1,330,493.40 - Step 6: Final answer
x = 1,451,809.72
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.