Finding the Fourth Proportional to 1,640,746.21, 2,264,230.18 and 905,700.90
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Solution
The fourth proportional to 1,640,746.21, 2,264,230.18 and 905,700.90 is: 1,249,867.47
Step by Step Solution
- Step 1: Write the proportion equation
1,640,746.21 : 2,264,230.18 = 905,700.90 : x - Step 2: Convert to fraction form
1,640,746.21/2,264,230.18 = 905,700.90/x - Step 3: Cross multiply
1,640,746.21x = 2,264,230.18 × 905,700.90 - Step 4: Simplify right side
1,640,746.21x = 2,050,715,311,833.16 - Step 5: Solve for x
x = 2,050,715,311,833.16/1,640,746.21 - Step 6: Final answer
x = 1,249,867.47
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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.