Finding the Fourth Proportional to 717,631.91, 990,327.44 and 395,334.53
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Solution
The fourth proportional to 717,631.91, 990,327.44 and 395,334.53 is: 545,559.12
Step by Step Solution
- Step 1: Write the proportion equation
717,631.91 : 990,327.44 = 395,334.53 : x - Step 2: Convert to fraction form
717,631.91/990,327.44 = 395,334.53/x - Step 3: Cross multiply
717,631.91x = 990,327.44 × 395,334.53 - Step 4: Simplify right side
717,631.91x = 391,510,631,061.83 - Step 5: Solve for x
x = 391,510,631,061.83/717,631.91 - Step 6: Final answer
x = 545,559.12
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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.