Finding the Fourth Proportional to 7,135,389.70, 10,688,569.35 and 4,431,415.30
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Solution
The fourth proportional to 7,135,389.70, 10,688,569.35 and 4,431,415.30 is: 6,638,108.32
Step by Step Solution
- Step 1: Write the proportion equation
7,135,389.70 : 10,688,569.35 = 4,431,415.30 : x - Step 2: Convert to fraction form
7,135,389.70/10,688,569.35 = 4,431,415.30/x - Step 3: Cross multiply
7,135,389.70x = 10,688,569.35 × 4,431,415.30 - Step 4: Simplify right side
7,135,389.70x = 47,365,489,752,701.05 - Step 5: Solve for x
x = 47,365,489,752,701.05/7,135,389.70 - Step 6: Final answer
x = 6,638,108.32
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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.