Finding the Fourth Proportional to 778,441.34, 1,074,249.24 and 438,909.68
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Solution
The fourth proportional to 778,441.34, 1,074,249.24 and 438,909.68 is: 605,695.47
Step by Step Solution
- Step 1: Write the proportion equation
778,441.34 : 1,074,249.24 = 438,909.68 : x - Step 2: Convert to fraction form
778,441.34/1,074,249.24 = 438,909.68/x - Step 3: Cross multiply
778,441.34x = 1,074,249.24 × 438,909.68 - Step 4: Simplify right side
778,441.34x = 471,498,390,168.64 - Step 5: Solve for x
x = 471,498,390,168.64/778,441.34 - Step 6: Final answer
x = 605,695.47
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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.