Finding the Fourth Proportional to 790,082.70, 1,090,312.84 and 445,991.06
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Solution
The fourth proportional to 790,082.70, 1,090,312.84 and 445,991.06 is: 615,466.94
Step by Step Solution
- Step 1: Write the proportion equation
790,082.70 : 1,090,312.84 = 445,991.06 : x - Step 2: Convert to fraction form
790,082.70/1,090,312.84 = 445,991.06/x - Step 3: Cross multiply
790,082.70x = 1,090,312.84 × 445,991.06 - Step 4: Simplify right side
790,082.70x = 486,269,779,243.21 - Step 5: Solve for x
x = 486,269,779,243.21/790,082.70 - Step 6: Final answer
x = 615,466.94
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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.