Finding the Fourth Proportional to 769,278.40, 1,154,130.92 and 320,210.80
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Solution
The fourth proportional to 769,278.40, 1,154,130.92 and 320,210.80 is: 480,404.99
Step by Step Solution
- Step 1: Write the proportion equation
769,278.40 : 1,154,130.92 = 320,210.80 : x - Step 2: Convert to fraction form
769,278.40/1,154,130.92 = 320,210.80/x - Step 3: Cross multiply
769,278.40x = 1,154,130.92 × 320,210.80 - Step 4: Simplify right side
769,278.40x = 369,565,185,197.94 - Step 5: Solve for x
x = 369,565,185,197.94/769,278.40 - Step 6: Final answer
x = 480,404.99
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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.