Finding the Fourth Proportional to 717,452.84, 990,129.83 and 395,162.79
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Solution
The fourth proportional to 717,452.84, 990,129.83 and 395,162.79 is: 545,349.39
Step by Step Solution
- Step 1: Write the proportion equation
717,452.84 : 990,129.83 = 395,162.79 : x - Step 2: Convert to fraction form
717,452.84/990,129.83 = 395,162.79/x - Step 3: Cross multiply
717,452.84x = 990,129.83 × 395,162.79 - Step 4: Simplify right side
717,452.84x = 391,262,464,109.21 - Step 5: Solve for x
x = 391,262,464,109.21/717,452.84 - Step 6: Final answer
x = 545,349.39
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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.