Finding the Fourth Proportional to 569,129.53, 785,389.20 and 311,000.80
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Solution
The fourth proportional to 569,129.53, 785,389.20 and 311,000.80 is: 429,175.88
Step by Step Solution
- Step 1: Write the proportion equation
569,129.53 : 785,389.20 = 311,000.80 : x - Step 2: Convert to fraction form
569,129.53/785,389.20 = 311,000.80/x - Step 3: Cross multiply
569,129.53x = 785,389.20 × 311,000.80 - Step 4: Simplify right side
569,129.53x = 244,256,669,511.36 - Step 5: Solve for x
x = 244,256,669,511.36/569,129.53 - Step 6: Final answer
x = 429,175.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.