Finding the Fourth Proportional to 660,559.96, 911,574.49 and 388,638.10
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Solution
The fourth proportional to 660,559.96, 911,574.49 and 388,638.10 is: 536,321.60
Step by Step Solution
- Step 1: Write the proportion equation
660,559.96 : 911,574.49 = 388,638.10 : x - Step 2: Convert to fraction form
660,559.96/911,574.49 = 388,638.10/x - Step 3: Cross multiply
660,559.96x = 911,574.49 × 388,638.10 - Step 4: Simplify right side
660,559.96x = 354,272,573,244.20 - Step 5: Solve for x
x = 354,272,573,244.20/660,559.96 - Step 6: Final answer
x = 536,321.60
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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.