Finding the Fourth Proportional to 720,356.84, 994,152.30 and 398,129.84
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Solution
The fourth proportional to 720,356.84, 994,152.30 and 398,129.84 is: 549,452.26
Step by Step Solution
- Step 1: Write the proportion equation
720,356.84 : 994,152.30 = 398,129.84 : x - Step 2: Convert to fraction form
720,356.84/994,152.30 = 398,129.84/x - Step 3: Cross multiply
720,356.84x = 994,152.30 × 398,129.84 - Step 4: Simplify right side
720,356.84x = 395,801,696,134.63 - Step 5: Solve for x
x = 395,801,696,134.63/720,356.84 - Step 6: Final answer
x = 549,452.26
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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.