Finding the Fourth Proportional to 691,764.09, 1,037,961.41 and 355,041.20
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Solution
The fourth proportional to 691,764.09, 1,037,961.41 and 355,041.20 is: 532,723.60
Step by Step Solution
- Step 1: Write the proportion equation
691,764.09 : 1,037,961.41 = 355,041.20 : x - Step 2: Convert to fraction form
691,764.09/1,037,961.41 = 355,041.20/x - Step 3: Cross multiply
691,764.09x = 1,037,961.41 × 355,041.20 - Step 4: Simplify right side
691,764.09x = 368,519,057,595.08 - Step 5: Solve for x
x = 368,519,057,595.08/691,764.09 - Step 6: Final answer
x = 532,723.60
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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.