Finding the Fourth Proportional to 987,211.80, 1,480,817.69 and 239,257.80
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Solution
The fourth proportional to 987,211.80, 1,480,817.69 and 239,257.80 is: 358,886.70
Step by Step Solution
- Step 1: Write the proportion equation
987,211.80 : 1,480,817.69 = 239,257.80 : x - Step 2: Convert to fraction form
987,211.80/1,480,817.69 = 239,257.80/x - Step 3: Cross multiply
987,211.80x = 1,480,817.69 × 239,257.80 - Step 4: Simplify right side
987,211.80x = 354,297,182,710.48 - Step 5: Solve for x
x = 354,297,182,710.48/987,211.80 - Step 6: Final answer
x = 358,886.70
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1.5x scale
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.