Finding the Fourth Proportional to 680,866.68, 939,645.97 and 487,292.57
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Solution
The fourth proportional to 680,866.68, 939,645.97 and 487,292.57 is: 672,499.49
Step by Step Solution
- Step 1: Write the proportion equation
680,866.68 : 939,645.97 = 487,292.57 : x - Step 2: Convert to fraction form
680,866.68/939,645.97 = 487,292.57/x - Step 3: Cross multiply
680,866.68x = 939,645.97 × 487,292.57 - Step 4: Simplify right side
680,866.68x = 457,882,493,694.98 - Step 5: Solve for x
x = 457,882,493,694.98/680,866.68 - Step 6: Final answer
x = 672,499.49
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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.