Finding the Fourth Proportional to 717,897.44, 990,705.12 and 395,619.10
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Solution
The fourth proportional to 717,897.44, 990,705.12 and 395,619.10 is: 545,958.02
Step by Step Solution
- Step 1: Write the proportion equation
717,897.44 : 990,705.12 = 395,619.10 : x - Step 2: Convert to fraction form
717,897.44/990,705.12 = 395,619.10/x - Step 3: Cross multiply
717,897.44x = 990,705.12 × 395,619.10 - Step 4: Simplify right side
717,897.44x = 391,941,867,939.79 - Step 5: Solve for x
x = 391,941,867,939.79/717,897.44 - Step 6: Final answer
x = 545,958.02
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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.