Finding the Fourth Proportional to 788,326.12, 1,087,873.38 and 448,789.48
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Solution
The fourth proportional to 788,326.12, 1,087,873.38 and 448,789.48 is: 619,319.99
Step by Step Solution
- Step 1: Write the proportion equation
788,326.12 : 1,087,873.38 = 448,789.48 : x - Step 2: Convert to fraction form
788,326.12/1,087,873.38 = 448,789.48/x - Step 3: Cross multiply
788,326.12x = 1,087,873.38 × 448,789.48 - Step 4: Simplify right side
788,326.12x = 488,226,128,516.04 - Step 5: Solve for x
x = 488,226,128,516.04/788,326.12 - Step 6: Final answer
x = 619,319.99
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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.