Finding the Fourth Proportional to 1,431,853.37, 1,975,965.09 and 787,315.09
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Solution
The fourth proportional to 1,431,853.37, 1,975,965.09 and 787,315.09 is: 1,086,498.91
Step by Step Solution
- Step 1: Write the proportion equation
1,431,853.37 : 1,975,965.09 = 787,315.09 : x - Step 2: Convert to fraction form
1,431,853.37/1,975,965.09 = 787,315.09/x - Step 3: Cross multiply
1,431,853.37x = 1,975,965.09 × 787,315.09 - Step 4: Simplify right side
1,431,853.37x = 1,555,707,132,670.21 - Step 5: Solve for x
x = 1,555,707,132,670.21/1,431,853.37 - Step 6: Final answer
x = 1,086,498.91
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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.