Finding the Fourth Proportional to 720,754.05, 994,661.35 and 398,484.91
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Solution
The fourth proportional to 720,754.05, 994,661.35 and 398,484.91 is: 549,920.65
Step by Step Solution
- Step 1: Write the proportion equation
720,754.05 : 994,661.35 = 398,484.91 : x - Step 2: Convert to fraction form
720,754.05/994,661.35 = 398,484.91/x - Step 3: Cross multiply
720,754.05x = 994,661.35 × 398,484.91 - Step 4: Simplify right side
720,754.05x = 396,357,541,023.82 - Step 5: Solve for x
x = 396,357,541,023.82/720,754.05 - Step 6: Final answer
x = 549,920.65
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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.