Finding the Fourth Proportional to 638,136.48, 880,634.16 and 351,666.84
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Solution
The fourth proportional to 638,136.48, 880,634.16 and 351,666.84 is: 485,303.45
Step by Step Solution
- Step 1: Write the proportion equation
638,136.48 : 880,634.16 = 351,666.84 : x - Step 2: Convert to fraction form
638,136.48/880,634.16 = 351,666.84/x - Step 3: Cross multiply
638,136.48x = 880,634.16 × 351,666.84 - Step 4: Simplify right side
638,136.48x = 309,689,832,243.25 - Step 5: Solve for x
x = 309,689,832,243.25/638,136.48 - Step 6: Final answer
x = 485,303.45
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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.