Finding the Fourth Proportional to 716,442.49, 988,690.63 and 394,145.67
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Solution
The fourth proportional to 716,442.49, 988,690.63 and 394,145.67 is: 543,921.02
Step by Step Solution
- Step 1: Write the proportion equation
716,442.49 : 988,690.63 = 394,145.67 : x - Step 2: Convert to fraction form
716,442.49/988,690.63 = 394,145.67/x - Step 3: Cross multiply
716,442.49x = 988,690.63 × 394,145.67 - Step 4: Simplify right side
716,442.49x = 389,688,130,784.07 - Step 5: Solve for x
x = 389,688,130,784.07/716,442.49 - Step 6: Final answer
x = 543,921.02
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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.