Finding the Fourth Proportional to 862,643.80, 1,292,993.70 and 413,579.80
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Solution
The fourth proportional to 862,643.80, 1,292,993.70 and 413,579.80 is: 619,903.69
Step by Step Solution
- Step 1: Write the proportion equation
862,643.80 : 1,292,993.70 = 413,579.80 : x - Step 2: Convert to fraction form
862,643.80/1,292,993.70 = 413,579.80/x - Step 3: Cross multiply
862,643.80x = 1,292,993.70 × 413,579.80 - Step 4: Simplify right side
862,643.80x = 534,756,075,847.26 - Step 5: Solve for x
x = 534,756,075,847.26/862,643.80 - Step 6: Final answer
x = 619,903.69
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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.