Finding the Fourth Proportional to 717,803.95, 990,613.67 and 395,513.95
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Solution
The fourth proportional to 717,803.95, 990,613.67 and 395,513.95 is: 545,833.61
Step by Step Solution
- Step 1: Write the proportion equation
717,803.95 : 990,613.67 = 395,513.95 : x - Step 2: Convert to fraction form
717,803.95/990,613.67 = 395,513.95/x - Step 3: Cross multiply
717,803.95x = 990,613.67 × 395,513.95 - Step 4: Simplify right side
717,803.95x = 391,801,523,568.13 - Step 5: Solve for x
x = 391,801,523,568.13/717,803.95 - Step 6: Final answer
x = 545,833.61
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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.