Finding the Fourth Proportional to 743,642.64, 1,115,240.40 and 211,206.96
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Solution
The fourth proportional to 743,642.64, 1,115,240.40 and 211,206.96 is: 316,746.95
Step by Step Solution
- Step 1: Write the proportion equation
743,642.64 : 1,115,240.40 = 211,206.96 : x - Step 2: Convert to fraction form
743,642.64/1,115,240.40 = 211,206.96/x - Step 3: Cross multiply
743,642.64x = 1,115,240.40 × 211,206.96 - Step 4: Simplify right side
743,642.64x = 235,546,534,553.18 - Step 5: Solve for x
x = 235,546,534,553.18/743,642.64 - Step 6: Final answer
x = 316,746.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.