Finding the Fourth Proportional to 520,299.99, 780,432.17 and 220,587.57
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Solution
The fourth proportional to 520,299.99, 780,432.17 and 220,587.57 is: 330,873.80
Step by Step Solution
- Step 1: Write the proportion equation
520,299.99 : 780,432.17 = 220,587.57 : x - Step 2: Convert to fraction form
520,299.99/780,432.17 = 220,587.57/x - Step 3: Cross multiply
520,299.99x = 780,432.17 × 220,587.57 - Step 4: Simplify right side
520,299.99x = 172,153,634,827.19 - Step 5: Solve for x
x = 172,153,634,827.19/520,299.99 - Step 6: Final answer
x = 330,873.80
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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.