Finding the Fourth Proportional to 3,887,981.40, 5,829,207.30 and 1,490,899.80
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Solution
The fourth proportional to 3,887,981.40, 5,829,207.30 and 1,490,899.80 is: 2,235,289.50
Step by Step Solution
- Step 1: Write the proportion equation
3,887,981.40 : 5,829,207.30 = 1,490,899.80 : x - Step 2: Convert to fraction form
3,887,981.40/5,829,207.30 = 1,490,899.80/x - Step 3: Cross multiply
3,887,981.40x = 5,829,207.30 × 1,490,899.80 - Step 4: Simplify right side
3,887,981.40x = 8,690,763,997,728.54 - Step 5: Solve for x
x = 8,690,763,997,728.54/3,887,981.40 - Step 6: Final answer
x = 2,235,289.50
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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.