Finding the Fourth Proportional to 742,309.74, 1,114,024.38 and 543,143.97
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Solution
The fourth proportional to 742,309.74, 1,114,024.38 and 543,143.97 is: 815,125.54
Step by Step Solution
- Step 1: Write the proportion equation
742,309.74 : 1,114,024.38 = 543,143.97 : x - Step 2: Convert to fraction form
742,309.74/1,114,024.38 = 543,143.97/x - Step 3: Cross multiply
742,309.74x = 1,114,024.38 × 543,143.97 - Step 4: Simplify right side
742,309.74x = 605,075,624,429.99 - Step 5: Solve for x
x = 605,075,624,429.99/742,309.74 - Step 6: Final answer
x = 815,125.54
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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.