Finding the Fourth Proportional to 1,431,867.87, 1,975,985.10 and 787,329.63
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Solution
The fourth proportional to 1,431,867.87, 1,975,985.10 and 787,329.63 is: 1,086,518.98
Step by Step Solution
- Step 1: Write the proportion equation
1,431,867.87 : 1,975,985.10 = 787,329.63 : x - Step 2: Convert to fraction form
1,431,867.87/1,975,985.10 = 787,329.63/x - Step 3: Cross multiply
1,431,867.87x = 1,975,985.10 × 787,329.63 - Step 4: Simplify right side
1,431,867.87x = 1,555,751,617,668.51 - Step 5: Solve for x
x = 1,555,751,617,668.51/1,431,867.87 - Step 6: Final answer
x = 1,086,518.98
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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.