Finding the Fourth Proportional to 1,285,157.50, 1,773,712.75 and 820,211.99
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Solution
The fourth proportional to 1,285,157.50, 1,773,712.75 and 820,211.99 is: 1,132,017.25
Step by Step Solution
- Step 1: Write the proportion equation
1,285,157.50 : 1,773,712.75 = 820,211.99 : x - Step 2: Convert to fraction form
1,285,157.50/1,773,712.75 = 820,211.99/x - Step 3: Cross multiply
1,285,157.50x = 1,773,712.75 × 820,211.99 - Step 4: Simplify right side
1,285,157.50x = 1,454,820,456,522.57 - Step 5: Solve for x
x = 1,454,820,456,522.57/1,285,157.50 - Step 6: Final answer
x = 1,132,017.25
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.