Finding the Fourth Proportional to 687,756.10, 1,031,634.15 and 214,437.70
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Solution
The fourth proportional to 687,756.10, 1,031,634.15 and 214,437.70 is: 321,656.55
Step by Step Solution
- Step 1: Write the proportion equation
687,756.10 : 1,031,634.15 = 214,437.70 : x - Step 2: Convert to fraction form
687,756.10/1,031,634.15 = 214,437.70/x - Step 3: Cross multiply
687,756.10x = 1,031,634.15 × 214,437.70 - Step 4: Simplify right side
687,756.10x = 221,221,254,367.46 - Step 5: Solve for x
x = 221,221,254,367.46/687,756.10 - Step 6: Final answer
x = 321,656.55
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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.