Finding the Fourth Proportional to 423,108.99, 634,722.75 and 123,611.49
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Solution
The fourth proportional to 423,108.99, 634,722.75 and 123,611.49 is: 185,434.55
Step by Step Solution
- Step 1: Write the proportion equation
423,108.99 : 634,722.75 = 123,611.49 : x - Step 2: Convert to fraction form
423,108.99/634,722.75 = 123,611.49/x - Step 3: Cross multiply
423,108.99x = 634,722.75 × 123,611.49 - Step 4: Simplify right side
423,108.99x = 78,459,024,864.40 - Step 5: Solve for x
x = 78,459,024,864.40/423,108.99 - Step 6: Final answer
x = 185,434.55
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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.