Finding the Fourth Proportional to 324,612.80, 486,919.20 and 319,947.20
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Solution
The fourth proportional to 324,612.80, 486,919.20 and 319,947.20 is: 479,920.80
Step by Step Solution
- Step 1: Write the proportion equation
324,612.80 : 486,919.20 = 319,947.20 : x - Step 2: Convert to fraction form
324,612.80/486,919.20 = 319,947.20/x - Step 3: Cross multiply
324,612.80x = 486,919.20 × 319,947.20 - Step 4: Simplify right side
324,612.80x = 155,788,434,666.24 - Step 5: Solve for x
x = 155,788,434,666.24/324,612.80 - Step 6: Final answer
x = 479,920.80
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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.