Finding the Fourth Proportional to 987,285.20, 1,480,927.79 and 239,331.20
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Solution
The fourth proportional to 987,285.20, 1,480,927.79 and 239,331.20 is: 358,996.79
Step by Step Solution
- Step 1: Write the proportion equation
987,285.20 : 1,480,927.79 = 239,331.20 : x - Step 2: Convert to fraction form
987,285.20/1,480,927.79 = 239,331.20/x - Step 3: Cross multiply
987,285.20x = 1,480,927.79 × 239,331.20 - Step 4: Simplify right side
987,285.20x = 354,432,216,492.75 - Step 5: Solve for x
x = 354,432,216,492.75/987,285.20 - Step 6: Final answer
x = 358,996.79
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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.