Finding the Fourth Proportional to 685,997.62, 1,024,102.41 and 640,409.83
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Solution
The fourth proportional to 685,997.62, 1,024,102.41 and 640,409.83 is: 956,045.95
Step by Step Solution
- Step 1: Write the proportion equation
685,997.62 : 1,024,102.41 = 640,409.83 : x - Step 2: Convert to fraction form
685,997.62/1,024,102.41 = 640,409.83/x - Step 3: Cross multiply
685,997.62x = 1,024,102.41 × 640,409.83 - Step 4: Simplify right side
685,997.62x = 655,845,245,328.90 - Step 5: Solve for x
x = 655,845,245,328.90/685,997.62 - Step 6: Final answer
x = 956,045.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.