Finding the Fourth Proportional to 716,121.66, 988,225.23 and 393,830.76
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Solution
The fourth proportional to 716,121.66, 988,225.23 and 393,830.76 is: 543,473.99
Step by Step Solution
- Step 1: Write the proportion equation
716,121.66 : 988,225.23 = 393,830.76 : x - Step 2: Convert to fraction form
716,121.66/988,225.23 = 393,830.76/x - Step 3: Cross multiply
716,121.66x = 988,225.23 × 393,830.76 - Step 4: Simplify right side
716,121.66x = 389,193,493,382.08 - Step 5: Solve for x
x = 389,193,493,382.08/716,121.66 - Step 6: Final answer
x = 543,473.99
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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.