Finding the Fourth Proportional to 1,387,102.70, 2,079,341.85 and 818,920.10
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Solution
The fourth proportional to 1,387,102.70, 2,079,341.85 and 818,920.10 is: 1,227,605.45
Step by Step Solution
- Step 1: Write the proportion equation
1,387,102.70 : 2,079,341.85 = 818,920.10 : x - Step 2: Convert to fraction form
1,387,102.70/2,079,341.85 = 818,920.10/x - Step 3: Cross multiply
1,387,102.70x = 2,079,341.85 × 818,920.10 - Step 4: Simplify right side
1,387,102.70x = 1,702,814,835,736.19 - Step 5: Solve for x
x = 1,702,814,835,736.19/1,387,102.70 - Step 6: Final answer
x = 1,227,605.45
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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.