Finding the Fourth Proportional to 685,616.40, 946,203.12 and 395,275.14
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Solution
The fourth proportional to 685,616.40, 946,203.12 and 395,275.14 is: 545,509.95
Step by Step Solution
- Step 1: Write the proportion equation
685,616.40 : 946,203.12 = 395,275.14 : x - Step 2: Convert to fraction form
685,616.40/946,203.12 = 395,275.14/x - Step 3: Cross multiply
685,616.40x = 946,203.12 × 395,275.14 - Step 4: Simplify right side
685,616.40x = 374,010,570,726.44 - Step 5: Solve for x
x = 374,010,570,726.44/685,616.40 - Step 6: Final answer
x = 545,509.95
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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.