Finding the Fourth Proportional to 1,386,237.90, 2,079,421.65 and 439,682.70
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Solution
The fourth proportional to 1,386,237.90, 2,079,421.65 and 439,682.70 is: 659,544.60
Step by Step Solution
- Step 1: Write the proportion equation
1,386,237.90 : 2,079,421.65 = 439,682.70 : x - Step 2: Convert to fraction form
1,386,237.90/2,079,421.65 = 439,682.70/x - Step 3: Cross multiply
1,386,237.90x = 2,079,421.65 × 439,682.70 - Step 4: Simplify right side
1,386,237.90x = 914,285,725,510.46 - Step 5: Solve for x
x = 914,285,725,510.46/1,386,237.90 - Step 6: Final answer
x = 659,544.60
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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.