Finding the Fourth Proportional to 5,237,881.51, 7,228,905.68 and 3,172,836.53
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Solution
The fourth proportional to 5,237,881.51, 7,228,905.68 and 3,172,836.53 is: 4,378,895.55
Step by Step Solution
- Step 1: Write the proportion equation
5,237,881.51 : 7,228,905.68 = 3,172,836.53 : x - Step 2: Convert to fraction form
5,237,881.51/7,228,905.68 = 3,172,836.53/x - Step 3: Cross multiply
5,237,881.51x = 7,228,905.68 × 3,172,836.53 - Step 4: Simplify right side
5,237,881.51x = 22,936,136,013,428.49 - Step 5: Solve for x
x = 22,936,136,013,428.49/5,237,881.51 - Step 6: Final answer
x = 4,378,895.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.