Finding the Fourth Proportional to 489,983.10, 676,335.20 and 317,596.88
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Solution
The fourth proportional to 489,983.10, 676,335.20 and 317,596.88 is: 438,386.45
Step by Step Solution
- Step 1: Write the proportion equation
489,983.10 : 676,335.20 = 317,596.88 : x - Step 2: Convert to fraction form
489,983.10/676,335.20 = 317,596.88/x - Step 3: Cross multiply
489,983.10x = 676,335.20 × 317,596.88 - Step 4: Simplify right side
489,983.10x = 214,801,949,354.18 - Step 5: Solve for x
x = 214,801,949,354.18/489,983.10 - Step 6: Final answer
x = 438,386.45
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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.