Finding the Fourth Proportional to 817,205.61, 1,128,299.31 and 511,405.62
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Solution
The fourth proportional to 817,205.61, 1,128,299.31 and 511,405.62 is: 706,087.43
Step by Step Solution
- Step 1: Write the proportion equation
817,205.61 : 1,128,299.31 = 511,405.62 : x - Step 2: Convert to fraction form
817,205.61/1,128,299.31 = 511,405.62/x - Step 3: Cross multiply
817,205.61x = 1,128,299.31 × 511,405.62 - Step 4: Simplify right side
817,205.61x = 577,018,608,176.12 - Step 5: Solve for x
x = 577,018,608,176.12/817,205.61 - Step 6: Final answer
x = 706,087.43
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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.