Finding the Fourth Proportional to 490,681.20, 736,021.80 and 455,251.80
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Solution
The fourth proportional to 490,681.20, 736,021.80 and 455,251.80 is: 682,877.70
Step by Step Solution
- Step 1: Write the proportion equation
490,681.20 : 736,021.80 = 455,251.80 : x - Step 2: Convert to fraction form
490,681.20/736,021.80 = 455,251.80/x - Step 3: Cross multiply
490,681.20x = 736,021.80 × 455,251.80 - Step 4: Simplify right side
490,681.20x = 335,075,249,289.24 - Step 5: Solve for x
x = 335,075,249,289.24/490,681.20 - Step 6: Final answer
x = 682,877.70
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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.