Finding the Fourth Proportional to 869,716.65, 1,304,574.98 and 420,652.65
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Solution
The fourth proportional to 869,716.65, 1,304,574.98 and 420,652.65 is: 630,978.98
Step by Step Solution
- Step 1: Write the proportion equation
869,716.65 : 1,304,574.98 = 420,652.65 : x - Step 2: Convert to fraction form
869,716.65/1,304,574.98 = 420,652.65/x - Step 3: Cross multiply
869,716.65x = 1,304,574.98 × 420,652.65 - Step 4: Simplify right side
869,716.65x = 548,772,920,357.43 - Step 5: Solve for x
x = 548,772,920,357.43/869,716.65 - Step 6: Final answer
x = 630,978.98
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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.