Finding the Fourth Proportional to 913,421.80, 1,370,132.70 and 414,785.80
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Solution
The fourth proportional to 913,421.80, 1,370,132.70 and 414,785.80 is: 622,178.70
Step by Step Solution
- Step 1: Write the proportion equation
913,421.80 : 1,370,132.70 = 414,785.80 : x - Step 2: Convert to fraction form
913,421.80/1,370,132.70 = 414,785.80/x - Step 3: Cross multiply
913,421.80x = 1,370,132.70 × 414,785.80 - Step 4: Simplify right side
913,421.80x = 568,311,588,075.66 - Step 5: Solve for x
x = 568,311,588,075.66/913,421.80 - Step 6: Final answer
x = 622,178.70
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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.