Finding the Fourth Proportional to 750,815.36, 1,036,141.90 and 428,518.96
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Solution
The fourth proportional to 750,815.36, 1,036,141.90 and 428,518.96 is: 591,365.70
Step by Step Solution
- Step 1: Write the proportion equation
750,815.36 : 1,036,141.90 = 428,518.96 : x - Step 2: Convert to fraction form
750,815.36/1,036,141.90 = 428,518.96/x - Step 3: Cross multiply
750,815.36x = 1,036,141.90 × 428,518.96 - Step 4: Simplify right side
750,815.36x = 444,006,449,400.42 - Step 5: Solve for x
x = 444,006,449,400.42/750,815.36 - Step 6: Final answer
x = 591,365.70
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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.