Finding the Fourth Proportional to 717,486.68, 990,176.58 and 395,196.68
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Solution
The fourth proportional to 717,486.68, 990,176.58 and 395,196.68 is: 545,396.18
Step by Step Solution
- Step 1: Write the proportion equation
717,486.68 : 990,176.58 = 395,196.68 : x - Step 2: Convert to fraction form
717,486.68/990,176.58 = 395,196.68/x - Step 3: Cross multiply
717,486.68x = 990,176.58 × 395,196.68 - Step 4: Simplify right side
717,486.68x = 391,314,497,029.75 - Step 5: Solve for x
x = 391,314,497,029.75/717,486.68 - Step 6: Final answer
x = 545,396.18
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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.