Finding the Fourth Proportional to 717,523.89, 990,182.94 and 395,232.99
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Solution
The fourth proportional to 717,523.89, 990,182.94 and 395,232.99 is: 545,421.51
Step by Step Solution
- Step 1: Write the proportion equation
717,523.89 : 990,182.94 = 395,232.99 : x - Step 2: Convert to fraction form
717,523.89/990,182.94 = 395,232.99/x - Step 3: Cross multiply
717,523.89x = 990,182.94 × 395,232.99 - Step 4: Simplify right side
717,523.89x = 391,352,964,023.19 - Step 5: Solve for x
x = 391,352,964,023.19/717,523.89 - Step 6: Final answer
x = 545,421.51
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1.5x scale
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.