Finding the Fourth Proportional to 919,135.65, 1,268,376.75 and 511,225.95
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Solution
The fourth proportional to 919,135.65, 1,268,376.75 and 511,225.95 is: 705,474.88
Step by Step Solution
- Step 1: Write the proportion equation
919,135.65 : 1,268,376.75 = 511,225.95 : x - Step 2: Convert to fraction form
919,135.65/1,268,376.75 = 511,225.95/x - Step 3: Cross multiply
919,135.65x = 1,268,376.75 × 511,225.95 - Step 4: Simplify right side
919,135.65x = 648,427,108,976.66 - Step 5: Solve for x
x = 648,427,108,976.66/919,135.65 - Step 6: Final answer
x = 705,474.88
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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.