Finding the Fourth Proportional to 839,679.21, 1,158,757.35 and 457,705.99
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Solution
The fourth proportional to 839,679.21, 1,158,757.35 and 457,705.99 is: 631,634.29
Step by Step Solution
- Step 1: Write the proportion equation
839,679.21 : 1,158,757.35 = 457,705.99 : x - Step 2: Convert to fraction form
839,679.21/1,158,757.35 = 457,705.99/x - Step 3: Cross multiply
839,679.21x = 1,158,757.35 × 457,705.99 - Step 4: Simplify right side
839,679.21x = 530,370,179,783.58 - Step 5: Solve for x
x = 530,370,179,783.58/839,679.21 - Step 6: Final answer
x = 631,634.29
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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.