Finding the Fourth Proportional to 1,284,589.21, 1,772,921.86 and 740,618.53
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Solution
The fourth proportional to 1,284,589.21, 1,772,921.86 and 740,618.53 is: 1,022,162.39
Step by Step Solution
- Step 1: Write the proportion equation
1,284,589.21 : 1,772,921.86 = 740,618.53 : x - Step 2: Convert to fraction form
1,284,589.21/1,772,921.86 = 740,618.53/x - Step 3: Cross multiply
1,284,589.21x = 1,772,921.86 × 740,618.53 - Step 4: Simplify right side
1,284,589.21x = 1,313,058,781,758.07 - Step 5: Solve for x
x = 1,313,058,781,758.07/1,284,589.21 - Step 6: Final answer
x = 1,022,162.39
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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.