Finding the Fourth Proportional to 1,119,903.20, 1,680,070.80 and 480,197.60
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Solution
The fourth proportional to 1,119,903.20, 1,680,070.80 and 480,197.60 is: 720,389.02
Step by Step Solution
- Step 1: Write the proportion equation
1,119,903.20 : 1,680,070.80 = 480,197.60 : x - Step 2: Convert to fraction form
1,119,903.20/1,680,070.80 = 480,197.60/x - Step 3: Cross multiply
1,119,903.20x = 1,680,070.80 × 480,197.60 - Step 4: Simplify right side
1,119,903.20x = 806,765,965,990.08 - Step 5: Solve for x
x = 806,765,965,990.08/1,119,903.20 - Step 6: Final answer
x = 720,389.02
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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.