Finding the Fourth Proportional to 717,458.80, 990,099.84 and 395,170.08
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Solution
The fourth proportional to 717,458.80, 990,099.84 and 395,170.08 is: 545,338.40
Step by Step Solution
- Step 1: Write the proportion equation
717,458.80 : 990,099.84 = 395,170.08 : x - Step 2: Convert to fraction form
717,458.80/990,099.84 = 395,170.08/x - Step 3: Cross multiply
717,458.80x = 990,099.84 × 395,170.08 - Step 4: Simplify right side
717,458.80x = 391,257,832,980.79 - Step 5: Solve for x
x = 391,257,832,980.79/717,458.80 - Step 6: Final answer
x = 545,338.40
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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.