Finding the Fourth Proportional to 509,615.80, 764,423.70 and 478,511.80
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Solution
The fourth proportional to 509,615.80, 764,423.70 and 478,511.80 is: 717,767.70
Step by Step Solution
- Step 1: Write the proportion equation
509,615.80 : 764,423.70 = 478,511.80 : x - Step 2: Convert to fraction form
509,615.80/764,423.70 = 478,511.80/x - Step 3: Cross multiply
509,615.80x = 764,423.70 × 478,511.80 - Step 4: Simplify right side
509,615.80x = 365,785,760,649.66 - Step 5: Solve for x
x = 365,785,760,649.66/509,615.80 - Step 6: Final answer
x = 717,767.70
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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.