Finding the Fourth Proportional to 742,549.70, 1,024,542.95 and 420,259.79
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Solution
The fourth proportional to 742,549.70, 1,024,542.95 and 420,259.79 is: 579,859.10
Step by Step Solution
- Step 1: Write the proportion equation
742,549.70 : 1,024,542.95 = 420,259.79 : x - Step 2: Convert to fraction form
742,549.70/1,024,542.95 = 420,259.79/x - Step 3: Cross multiply
742,549.70x = 1,024,542.95 × 420,259.79 - Step 4: Simplify right side
742,549.70x = 430,574,198,839.62 - Step 5: Solve for x
x = 430,574,198,839.62/742,549.70 - Step 6: Final answer
x = 579,859.10
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.