Finding the Fourth Proportional to 717,901.55, 990,702.07 and 395,611.55
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Solution
The fourth proportional to 717,901.55, 990,702.07 and 395,611.55 is: 545,942.80
Step by Step Solution
- Step 1: Write the proportion equation
717,901.55 : 990,702.07 = 395,611.55 : x - Step 2: Convert to fraction form
717,901.55/990,702.07 = 395,611.55/x - Step 3: Cross multiply
717,901.55x = 990,702.07 × 395,611.55 - Step 4: Simplify right side
717,901.55x = 391,933,181,500.91 - Step 5: Solve for x
x = 391,933,181,500.91/717,901.55 - Step 6: Final answer
x = 545,942.80
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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.