Finding the Fourth Proportional to 665,701.26, 918,596.88 and 393,779.40
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Solution
The fourth proportional to 665,701.26, 918,596.88 and 393,779.40 is: 543,373.66
Step by Step Solution
- Step 1: Write the proportion equation
665,701.26 : 918,596.88 = 393,779.40 : x - Step 2: Convert to fraction form
665,701.26/918,596.88 = 393,779.40/x - Step 3: Cross multiply
665,701.26x = 918,596.88 × 393,779.40 - Step 4: Simplify right side
665,701.26x = 361,724,528,248.27 - Step 5: Solve for x
x = 361,724,528,248.27/665,701.26 - Step 6: Final answer
x = 543,373.66
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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.