Finding the Fourth Proportional to 628,653.76, 867,560.88 and 387,075.68
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Solution
The fourth proportional to 628,653.76, 867,560.88 and 387,075.68 is: 534,175.95
Step by Step Solution
- Step 1: Write the proportion equation
628,653.76 : 867,560.88 = 387,075.68 : x - Step 2: Convert to fraction form
628,653.76/867,560.88 = 387,075.68/x - Step 3: Cross multiply
628,653.76x = 867,560.88 × 387,075.68 - Step 4: Simplify right side
628,653.76x = 335,811,717,567.40 - Step 5: Solve for x
x = 335,811,717,567.40/628,653.76 - Step 6: Final answer
x = 534,175.95
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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.