Finding the Fourth Proportional to 709,503.08, 979,137.09 and 403,571.60
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Solution
The fourth proportional to 709,503.08, 979,137.09 and 403,571.60 is: 556,941.80
Step by Step Solution
- Step 1: Write the proportion equation
709,503.08 : 979,137.09 = 403,571.60 : x - Step 2: Convert to fraction form
709,503.08/979,137.09 = 403,571.60/x - Step 3: Cross multiply
709,503.08x = 979,137.09 × 403,571.60 - Step 4: Simplify right side
709,503.08x = 395,151,920,806.72 - Step 5: Solve for x
x = 395,151,920,806.72/709,503.08 - Step 6: Final answer
x = 556,941.80
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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.