Finding the Fourth Proportional to 368,802,480.80, 553,203,721.20 and 347,639,319.20
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Solution
The fourth proportional to 368,802,480.80, 553,203,721.20 and 347,639,319.20 is: 521,458,978.80
Step by Step Solution
- Step 1: Write the proportion equation
368,802,480.80 : 553,203,721.20 = 347,639,319.20 : x - Step 2: Convert to fraction form
368,802,480.80/553,203,721.20 = 347,639,319.20/x - Step 3: Cross multiply
368,802,480.80x = 553,203,721.20 × 347,639,319.20 - Step 4: Simplify right side
368,802,480.80x = 192,315,365,016,874,624 - Step 5: Solve for x
x = 192,315,365,016,874,624/368,802,480.80 - Step 6: Final answer
x = 521,458,978.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.