Finding the Fourth Proportional to 718,045.15, 990,908.34 and 395,756.07
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Solution
The fourth proportional to 718,045.15, 990,908.34 and 395,756.07 is: 546,146.70
Step by Step Solution
- Step 1: Write the proportion equation
718,045.15 : 990,908.34 = 395,756.07 : x - Step 2: Convert to fraction form
718,045.15/990,908.34 = 395,756.07/x - Step 3: Cross multiply
718,045.15x = 990,908.34 × 395,756.07 - Step 4: Simplify right side
718,045.15x = 392,157,990,368.62 - Step 5: Solve for x
x = 392,157,990,368.62/718,045.15 - Step 6: Final answer
x = 546,146.70
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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.