Finding the Fourth Proportional to 716,228.06, 988,395.63 and 393,938.78
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Solution
The fourth proportional to 716,228.06, 988,395.63 and 393,938.78 is: 543,636.02
Step by Step Solution
- Step 1: Write the proportion equation
716,228.06 : 988,395.63 = 393,938.78 : x - Step 2: Convert to fraction form
716,228.06/988,395.63 = 393,938.78/x - Step 3: Cross multiply
716,228.06x = 988,395.63 × 393,938.78 - Step 4: Simplify right side
716,228.06x = 389,367,368,639.53 - Step 5: Solve for x
x = 389,367,368,639.53/716,228.06 - Step 6: Final answer
x = 543,636.02
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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.