Finding the Fourth Proportional to 1,238,376.74, 1,708,974.18 and 687,102.80
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Solution
The fourth proportional to 1,238,376.74, 1,708,974.18 and 687,102.80 is: 948,209.79
Step by Step Solution
- Step 1: Write the proportion equation
1,238,376.74 : 1,708,974.18 = 687,102.80 : x - Step 2: Convert to fraction form
1,238,376.74/1,708,974.18 = 687,102.80/x - Step 3: Cross multiply
1,238,376.74x = 1,708,974.18 × 687,102.80 - Step 4: Simplify right side
1,238,376.74x = 1,174,240,944,205.70 - Step 5: Solve for x
x = 1,174,240,944,205.70/1,238,376.74 - Step 6: Final answer
x = 948,209.79
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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.