Finding the Fourth Proportional to 912,745.17, 1,259,202.65 and 611,036.37
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Solution
The fourth proportional to 912,745.17, 1,259,202.65 and 611,036.37 is: 842,971.99
Step by Step Solution
- Step 1: Write the proportion equation
912,745.17 : 1,259,202.65 = 611,036.37 : x - Step 2: Convert to fraction form
912,745.17/1,259,202.65 = 611,036.37/x - Step 3: Cross multiply
912,745.17x = 1,259,202.65 × 611,036.37 - Step 4: Simplify right side
912,745.17x = 769,418,613,295.20 - Step 5: Solve for x
x = 769,418,613,295.20/912,745.17 - Step 6: Final answer
x = 842,971.99
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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.