Finding the Fourth Proportional to 679,115.12, 937,132.78 and 373,212.88
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Solution
The fourth proportional to 679,115.12, 937,132.78 and 373,212.88 is: 515,008.45
Step by Step Solution
- Step 1: Write the proportion equation
679,115.12 : 937,132.78 = 373,212.88 : x - Step 2: Convert to fraction form
679,115.12/937,132.78 = 373,212.88/x - Step 3: Cross multiply
679,115.12x = 937,132.78 × 373,212.88 - Step 4: Simplify right side
679,115.12x = 349,750,023,766.21 - Step 5: Solve for x
x = 349,750,023,766.21/679,115.12 - Step 6: Final answer
x = 515,008.45
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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.