Finding the Fourth Proportional to 1,315,782.18, 1,973,745.05 and 417,158.96
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Solution
The fourth proportional to 1,315,782.18, 1,973,745.05 and 417,158.96 is: 625,761.19
Step by Step Solution
- Step 1: Write the proportion equation
1,315,782.18 : 1,973,745.05 = 417,158.96 : x - Step 2: Convert to fraction form
1,315,782.18/1,973,745.05 = 417,158.96/x - Step 3: Cross multiply
1,315,782.18x = 1,973,745.05 × 417,158.96 - Step 4: Simplify right side
1,315,782.18x = 823,365,420,408.63 - Step 5: Solve for x
x = 823,365,420,408.63/1,315,782.18 - Step 6: Final answer
x = 625,761.19
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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.