Finding the Fourth Proportional to 601,642.98, 830,644.74 and 387,155.79
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Solution
The fourth proportional to 601,642.98, 830,644.74 and 387,155.79 is: 534,517.86
Step by Step Solution
- Step 1: Write the proportion equation
601,642.98 : 830,644.74 = 387,155.79 : x - Step 2: Convert to fraction form
601,642.98/830,644.74 = 387,155.79/x - Step 3: Cross multiply
601,642.98x = 830,644.74 × 387,155.79 - Step 4: Simplify right side
601,642.98x = 321,588,920,524.05 - Step 5: Solve for x
x = 321,588,920,524.05/601,642.98 - Step 6: Final answer
x = 534,517.86
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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.