Finding the Fourth Proportional to 1,218,128.58, 1,680,630.99 and 708,732.54
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Solution
The fourth proportional to 1,218,128.58, 1,680,630.99 and 708,732.54 is: 977,826.06
Step by Step Solution
- Step 1: Write the proportion equation
1,218,128.58 : 1,680,630.99 = 708,732.54 : x - Step 2: Convert to fraction form
1,218,128.58/1,680,630.99 = 708,732.54/x - Step 3: Cross multiply
1,218,128.58x = 1,680,630.99 × 708,732.54 - Step 4: Simplify right side
1,218,128.58x = 1,191,117,870,345.41 - Step 5: Solve for x
x = 1,191,117,870,345.41/1,218,128.58 - Step 6: Final answer
x = 977,826.06
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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.