Finding the Fourth Proportional to 712,031.99, 982,629.14 and 389,742.35
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Solution
The fourth proportional to 712,031.99, 982,629.14 and 389,742.35 is: 537,858.12
Step by Step Solution
- Step 1: Write the proportion equation
712,031.99 : 982,629.14 = 389,742.35 : x - Step 2: Convert to fraction form
712,031.99/982,629.14 = 389,742.35/x - Step 3: Cross multiply
712,031.99x = 982,629.14 × 389,742.35 - Step 4: Simplify right side
712,031.99x = 382,972,183,340.22 - Step 5: Solve for x
x = 382,972,183,340.22/712,031.99 - Step 6: Final answer
x = 537,858.12
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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.