Finding the Fourth Proportional to 717,838.14, 990,660.12 and 395,547.84
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Solution
The fourth proportional to 717,838.14, 990,660.12 and 395,547.84 is: 545,879.98
Step by Step Solution
- Step 1: Write the proportion equation
717,838.14 : 990,660.12 = 395,547.84 : x - Step 2: Convert to fraction form
717,838.14/990,660.12 = 395,547.84/x - Step 3: Cross multiply
717,838.14x = 990,660.12 × 395,547.84 - Step 4: Simplify right side
717,838.14x = 391,853,470,640.14 - Step 5: Solve for x
x = 391,853,470,640.14/717,838.14 - Step 6: Final answer
x = 545,879.98
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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.