Finding the Fourth Proportional to 717,853.98, 990,638.58 and 416,222.94
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Solution
The fourth proportional to 717,853.98, 990,638.58 and 416,222.94 is: 574,387.71
Step by Step Solution
- Step 1: Write the proportion equation
717,853.98 : 990,638.58 = 416,222.94 : x - Step 2: Convert to fraction form
717,853.98/990,638.58 = 416,222.94/x - Step 3: Cross multiply
717,853.98x = 990,638.58 × 416,222.94 - Step 4: Simplify right side
717,853.98x = 412,326,502,245.03 - Step 5: Solve for x
x = 412,326,502,245.03/717,853.98 - Step 6: Final answer
x = 574,387.71
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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.