Finding the Fourth Proportional to 1,555,777.28, 2,146,972.68 and 840,385.28
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Solution
The fourth proportional to 1,555,777.28, 2,146,972.68 and 840,385.28 is: 1,159,731.70
Step by Step Solution
- Step 1: Write the proportion equation
1,555,777.28 : 2,146,972.68 = 840,385.28 : x - Step 2: Convert to fraction form
1,555,777.28/2,146,972.68 = 840,385.28/x - Step 3: Cross multiply
1,555,777.28x = 2,146,972.68 × 840,385.28 - Step 4: Simplify right side
1,555,777.28x = 1,804,284,236,834.15 - Step 5: Solve for x
x = 1,804,284,236,834.15/1,555,777.28 - Step 6: Final answer
x = 1,159,731.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.