Finding the Fourth Proportional to 717,387.84, 990,039.96 and 395,097.84
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Solution
The fourth proportional to 717,387.84, 990,039.96 and 395,097.84 is: 545,259.66
Step by Step Solution
- Step 1: Write the proportion equation
717,387.84 : 990,039.96 = 395,097.84 : x - Step 2: Convert to fraction form
717,387.84/990,039.96 = 395,097.84/x - Step 3: Cross multiply
717,387.84x = 990,039.96 × 395,097.84 - Step 4: Simplify right side
717,387.84x = 391,162,649,709.69 - Step 5: Solve for x
x = 391,162,649,709.69/717,387.84 - Step 6: Final answer
x = 545,259.66
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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.