Finding the Fourth Proportional to 986,449.20, 1,479,673.80 and 355,135.20
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Solution
The fourth proportional to 986,449.20, 1,479,673.80 and 355,135.20 is: 532,702.80
Step by Step Solution
- Step 1: Write the proportion equation
986,449.20 : 1,479,673.80 = 355,135.20 : x - Step 2: Convert to fraction form
986,449.20/1,479,673.80 = 355,135.20/x - Step 3: Cross multiply
986,449.20x = 1,479,673.80 × 355,135.20 - Step 4: Simplify right side
986,449.20x = 525,484,250,897.76 - Step 5: Solve for x
x = 525,484,250,897.76/986,449.20 - Step 6: Final answer
x = 532,702.80
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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.