Finding the Fourth Proportional to 918,294.40, 1,378,097.70 and 386,197.30
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Solution
The fourth proportional to 918,294.40, 1,378,097.70 and 386,197.30 is: 579,571.88
Step by Step Solution
- Step 1: Write the proportion equation
918,294.40 : 1,378,097.70 = 386,197.30 : x - Step 2: Convert to fraction form
918,294.40/1,378,097.70 = 386,197.30/x - Step 3: Cross multiply
918,294.40x = 1,378,097.70 × 386,197.30 - Step 4: Simplify right side
918,294.40x = 532,217,610,876.21 - Step 5: Solve for x
x = 532,217,610,876.21/918,294.40 - Step 6: Final answer
x = 579,571.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.