Finding the Fourth Proportional to 718,192.28, 991,104.94 and 395,907.74
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Solution
The fourth proportional to 718,192.28, 991,104.94 and 395,907.74 is: 546,352.46
Step by Step Solution
- Step 1: Write the proportion equation
718,192.28 : 991,104.94 = 395,907.74 : x - Step 2: Convert to fraction form
718,192.28/991,104.94 = 395,907.74/x - Step 3: Cross multiply
718,192.28x = 991,104.94 × 395,907.74 - Step 4: Simplify right side
718,192.28x = 392,386,116,898.24 - Step 5: Solve for x
x = 392,386,116,898.24/718,192.28 - Step 6: Final answer
x = 546,352.46
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1.5x scale
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.