Finding the Fourth Proportional to 1,920,155.70, 2,880,233.55 and 1,207,874.10
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Solution
The fourth proportional to 1,920,155.70, 2,880,233.55 and 1,207,874.10 is: 1,811,811.15
Step by Step Solution
- Step 1: Write the proportion equation
1,920,155.70 : 2,880,233.55 = 1,207,874.10 : x - Step 2: Convert to fraction form
1,920,155.70/2,880,233.55 = 1,207,874.10/x - Step 3: Cross multiply
1,920,155.70x = 2,880,233.55 × 1,207,874.10 - Step 4: Simplify right side
1,920,155.70x = 3,478,959,506,996.06 - Step 5: Solve for x
x = 3,478,959,506,996.06/1,920,155.70 - Step 6: Final answer
x = 1,811,811.15
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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.