Finding the Fourth Proportional to 717,874.12, 990,672.93 and 395,595.75
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Solution
The fourth proportional to 717,874.12, 990,672.93 and 395,595.75 is: 545,925.80
Step by Step Solution
- Step 1: Write the proportion equation
717,874.12 : 990,672.93 = 395,595.75 : x - Step 2: Convert to fraction form
717,874.12/990,672.93 = 395,595.75/x - Step 3: Cross multiply
717,874.12x = 990,672.93 × 395,595.75 - Step 4: Simplify right side
717,874.12x = 391,906,000,748.05 - Step 5: Solve for x
x = 391,906,000,748.05/717,874.12 - Step 6: Final answer
x = 545,925.80
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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.