Finding the Fourth Proportional to 718,888.97, 992,070.11 and 396,598.95
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Solution
The fourth proportional to 718,888.97, 992,070.11 and 396,598.95 is: 547,308.39
Step by Step Solution
- Step 1: Write the proportion equation
718,888.97 : 992,070.11 = 396,598.95 : x - Step 2: Convert to fraction form
718,888.97/992,070.11 = 396,598.95/x - Step 3: Cross multiply
718,888.97x = 992,070.11 × 396,598.95 - Step 4: Simplify right side
718,888.97x = 393,453,964,943.88 - Step 5: Solve for x
x = 393,453,964,943.88/718,888.97 - Step 6: Final answer
x = 547,308.39
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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.