Finding the Fourth Proportional to 389,783.70, 584,676.99 and 119,909.97
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Solution
The fourth proportional to 389,783.70, 584,676.99 and 119,909.97 is: 179,865.40
Step by Step Solution
- Step 1: Write the proportion equation
389,783.70 : 584,676.99 = 119,909.97 : x - Step 2: Convert to fraction form
389,783.70/584,676.99 = 119,909.97/x - Step 3: Cross multiply
389,783.70x = 584,676.99 × 119,909.97 - Step 4: Simplify right side
389,783.70x = 70,108,600,330.59 - Step 5: Solve for x
x = 70,108,600,330.59/389,783.70 - Step 6: Final answer
x = 179,865.40
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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.