Finding the Fourth Proportional to 644,556.50, 889,511.20 and 372,709.70
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Solution
The fourth proportional to 644,556.50, 889,511.20 and 372,709.70 is: 514,352.82
Step by Step Solution
- Step 1: Write the proportion equation
644,556.50 : 889,511.20 = 372,709.70 : x - Step 2: Convert to fraction form
644,556.50/889,511.20 = 372,709.70/x - Step 3: Cross multiply
644,556.50x = 889,511.20 × 372,709.70 - Step 4: Simplify right side
644,556.50x = 331,529,452,498.64 - Step 5: Solve for x
x = 331,529,452,498.64/644,556.50 - Step 6: Final answer
x = 514,352.82
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1.5x scale
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.