Finding the Fourth Proportional to 918,138.20, 1,377,207.30 and 619,539.80
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Solution
The fourth proportional to 918,138.20, 1,377,207.30 and 619,539.80 is: 929,309.70
Step by Step Solution
- Step 1: Write the proportion equation
918,138.20 : 1,377,207.30 = 619,539.80 : x - Step 2: Convert to fraction form
918,138.20/1,377,207.30 = 619,539.80/x - Step 3: Cross multiply
918,138.20x = 1,377,207.30 × 619,539.80 - Step 4: Simplify right side
918,138.20x = 853,234,735,200.54 - Step 5: Solve for x
x = 853,234,735,200.54/918,138.20 - Step 6: Final answer
x = 929,309.70
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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.