Finding the Fourth Proportional to 520,028.80, 778,876.80 and 426,716.80
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Solution
The fourth proportional to 520,028.80, 778,876.80 and 426,716.80 is: 639,118.09
Step by Step Solution
- Step 1: Write the proportion equation
520,028.80 : 778,876.80 = 426,716.80 : x - Step 2: Convert to fraction form
520,028.80/778,876.80 = 426,716.80/x - Step 3: Cross multiply
520,028.80x = 778,876.80 × 426,716.80 - Step 4: Simplify right side
520,028.80x = 332,359,815,690.24 - Step 5: Solve for x
x = 332,359,815,690.24/520,028.80 - Step 6: Final answer
x = 639,118.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.