Finding the Fourth Proportional to 638,312.24, 880,860.38 and 351,858.98
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Solution
The fourth proportional to 638,312.24, 880,860.38 and 351,858.98 is: 485,559.60
Step by Step Solution
- Step 1: Write the proportion equation
638,312.24 : 880,860.38 = 351,858.98 : x - Step 2: Convert to fraction form
638,312.24/880,860.38 = 351,858.98/x - Step 3: Cross multiply
638,312.24x = 880,860.38 × 351,858.98 - Step 4: Simplify right side
638,312.24x = 309,938,635,272.07 - Step 5: Solve for x
x = 309,938,635,272.07/638,312.24 - Step 6: Final answer
x = 485,559.60
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1.5x scale
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.