Finding the Fourth Proportional to 717,828.09, 990,597.65 and 395,530.53
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Solution
The fourth proportional to 717,828.09, 990,597.65 and 395,530.53 is: 545,829.31
Step by Step Solution
- Step 1: Write the proportion equation
717,828.09 : 990,597.65 = 395,530.53 : x - Step 2: Convert to fraction form
717,828.09/990,597.65 = 395,530.53/x - Step 3: Cross multiply
717,828.09x = 990,597.65 × 395,530.53 - Step 4: Simplify right side
717,828.09x = 391,811,611,543.60 - Step 5: Solve for x
x = 391,811,611,543.60/717,828.09 - Step 6: Final answer
x = 545,829.31
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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.