Finding the Fourth Proportional to 859,637.20, 1,289,455.80 and 219,939.70
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Solution
The fourth proportional to 859,637.20, 1,289,455.80 and 219,939.70 is: 329,909.55
Step by Step Solution
- Step 1: Write the proportion equation
859,637.20 : 1,289,455.80 = 219,939.70 : x - Step 2: Convert to fraction form
859,637.20/1,289,455.80 = 219,939.70/x - Step 3: Cross multiply
859,637.20x = 1,289,455.80 × 219,939.70 - Step 4: Simplify right side
859,637.20x = 283,602,521,815.26 - Step 5: Solve for x
x = 283,602,521,815.26/859,637.20 - Step 6: Final answer
x = 329,909.55
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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.