Finding the Fourth Proportional to 1,728,130.80, 2,587,660.20 and 1,219,947.60
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Solution
The fourth proportional to 1,728,130.80, 2,587,660.20 and 1,219,947.60 is: 1,826,719.28
Step by Step Solution
- Step 1: Write the proportion equation
1,728,130.80 : 2,587,660.20 = 1,219,947.60 : x - Step 2: Convert to fraction form
1,728,130.80/2,587,660.20 = 1,219,947.60/x - Step 3: Cross multiply
1,728,130.80x = 2,587,660.20 × 1,219,947.60 - Step 4: Simplify right side
1,728,130.80x = 3,156,809,850,605.52 - Step 5: Solve for x
x = 3,156,809,850,605.52/1,728,130.80 - Step 6: Final answer
x = 1,826,719.28
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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.