Finding the Fourth Proportional to 7,748,916.52, 11,625,990.57 and 3,430,371.05
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Solution
The fourth proportional to 7,748,916.52, 11,625,990.57 and 3,430,371.05 is: 5,146,714.55
Step by Step Solution
- Step 1: Write the proportion equation
7,748,916.52 : 11,625,990.57 = 3,430,371.05 : x - Step 2: Convert to fraction form
7,748,916.52/11,625,990.57 = 3,430,371.05/x - Step 3: Cross multiply
7,748,916.52x = 11,625,990.57 × 3,430,371.05 - Step 4: Simplify right side
7,748,916.52x = 39,881,461,420,771.05 - Step 5: Solve for x
x = 39,881,461,420,771.05/7,748,916.52 - Step 6: Final answer
x = 5,146,714.55
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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.