Finding the Fourth Proportional to 810,747.36, 1,216,149.93 and 278,264.70
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Solution
The fourth proportional to 810,747.36, 1,216,149.93 and 278,264.70 is: 417,406.97
Step by Step Solution
- Step 1: Write the proportion equation
810,747.36 : 1,216,149.93 = 278,264.70 : x - Step 2: Convert to fraction form
810,747.36/1,216,149.93 = 278,264.70/x - Step 3: Cross multiply
810,747.36x = 1,216,149.93 × 278,264.70 - Step 4: Simplify right side
810,747.36x = 338,411,595,426.47 - Step 5: Solve for x
x = 338,411,595,426.47/810,747.36 - Step 6: Final answer
x = 417,406.97
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1.5x scale
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.