Finding the Fourth Proportional to 716,126.99, 988,235.51 and 393,837.08
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Solution
The fourth proportional to 716,126.99, 988,235.51 and 393,837.08 is: 543,484.31
Step by Step Solution
- Step 1: Write the proportion equation
716,126.99 : 988,235.51 = 393,837.08 : x - Step 2: Convert to fraction form
716,126.99/988,235.51 = 393,837.08/x - Step 3: Cross multiply
716,126.99x = 988,235.51 × 393,837.08 - Step 4: Simplify right side
716,126.99x = 389,203,780,700.35 - Step 5: Solve for x
x = 389,203,780,700.35/716,126.99 - Step 6: Final answer
x = 543,484.31
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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.