Finding the Fourth Proportional to 709,438.28, 979,146.42 and 677,550.92
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Solution
The fourth proportional to 709,438.28, 979,146.42 and 677,550.92 is: 935,136.40
Step by Step Solution
- Step 1: Write the proportion equation
709,438.28 : 979,146.42 = 677,550.92 : x - Step 2: Convert to fraction form
709,438.28/979,146.42 = 677,550.92/x - Step 3: Cross multiply
709,438.28x = 979,146.42 × 677,550.92 - Step 4: Simplify right side
709,438.28x = 663,421,557,685.71 - Step 5: Solve for x
x = 663,421,557,685.71/709,438.28 - Step 6: Final answer
x = 935,136.40
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1.5x scale
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.