Finding the Fourth Proportional to 1,128,245.49, 1,556,950.71 and 631,522.42
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Solution
The fourth proportional to 1,128,245.49, 1,556,950.71 and 631,522.42 is: 871,485.23
Step by Step Solution
- Step 1: Write the proportion equation
1,128,245.49 : 1,556,950.71 = 631,522.42 : x - Step 2: Convert to fraction form
1,128,245.49/1,556,950.71 = 631,522.42/x - Step 3: Cross multiply
1,128,245.49x = 1,556,950.71 × 631,522.42 - Step 4: Simplify right side
1,128,245.49x = 983,249,278,675.75 - Step 5: Solve for x
x = 983,249,278,675.75/1,128,245.49 - Step 6: Final answer
x = 871,485.23
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1.5x scale
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.