Finding the Fourth Proportional to 717,460.55, 990,102.26 and 395,171.81
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Solution
The fourth proportional to 717,460.55, 990,102.26 and 395,171.81 is: 545,340.79
Step by Step Solution
- Step 1: Write the proportion equation
717,460.55 : 990,102.26 = 395,171.81 : x - Step 2: Convert to fraction form
717,460.55/990,102.26 = 395,171.81/x - Step 3: Cross multiply
717,460.55x = 990,102.26 × 395,171.81 - Step 4: Simplify right side
717,460.55x = 391,260,502,169.29 - Step 5: Solve for x
x = 391,260,502,169.29/717,460.55 - Step 6: Final answer
x = 545,340.79
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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.