Finding the Fourth Proportional to 716,119.02, 988,221.66 and 393,828.12
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Solution
The fourth proportional to 716,119.02, 988,221.66 and 393,828.12 is: 543,470.38
Step by Step Solution
- Step 1: Write the proportion equation
716,119.02 : 988,221.66 = 393,828.12 : x - Step 2: Convert to fraction form
716,119.02/988,221.66 = 393,828.12/x - Step 3: Cross multiply
716,119.02x = 988,221.66 × 393,828.12 - Step 4: Simplify right side
716,119.02x = 389,189,478,501.08 - Step 5: Solve for x
x = 389,189,478,501.08/716,119.02 - Step 6: Final answer
x = 543,470.38
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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.