Finding the Fourth Proportional to 439,358.40, 658,519.20 and 328,420.80
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Solution
The fourth proportional to 439,358.40, 658,519.20 and 328,420.80 is: 492,243.70
Step by Step Solution
- Step 1: Write the proportion equation
439,358.40 : 658,519.20 = 328,420.80 : x - Step 2: Convert to fraction form
439,358.40/658,519.20 = 328,420.80/x - Step 3: Cross multiply
439,358.40x = 658,519.20 × 328,420.80 - Step 4: Simplify right side
439,358.40x = 216,271,402,479.36 - Step 5: Solve for x
x = 216,271,402,479.36/439,358.40 - Step 6: Final answer
x = 492,243.70
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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.