Finding the Fourth Proportional to 717,487.36, 990,132.45 and 395,197.44
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Solution
The fourth proportional to 717,487.36, 990,132.45 and 395,197.44 is: 545,372.41
Step by Step Solution
- Step 1: Write the proportion equation
717,487.36 : 990,132.45 = 395,197.44 : x - Step 2: Convert to fraction form
717,487.36/990,132.45 = 395,197.44/x - Step 3: Cross multiply
717,487.36x = 990,132.45 × 395,197.44 - Step 4: Simplify right side
717,487.36x = 391,297,809,500.93 - Step 5: Solve for x
x = 391,297,809,500.93/717,487.36 - Step 6: Final answer
x = 545,372.41
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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.