Finding the Fourth Proportional to 521,719.80, 782,579.70 and 272,887.80
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Solution
The fourth proportional to 521,719.80, 782,579.70 and 272,887.80 is: 409,331.70
Step by Step Solution
- Step 1: Write the proportion equation
521,719.80 : 782,579.70 = 272,887.80 : x - Step 2: Convert to fraction form
521,719.80/782,579.70 = 272,887.80/x - Step 3: Cross multiply
521,719.80x = 782,579.70 × 272,887.80 - Step 4: Simplify right side
521,719.80x = 213,556,452,657.66 - Step 5: Solve for x
x = 213,556,452,657.66/521,719.80 - Step 6: Final answer
x = 409,331.70
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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.