Finding the Fourth Proportional to 717,660.09, 990,368.61 and 395,367.36
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Solution
The fourth proportional to 717,660.09, 990,368.61 and 395,367.36 is: 545,605.68
Step by Step Solution
- Step 1: Write the proportion equation
717,660.09 : 990,368.61 = 395,367.36 : x - Step 2: Convert to fraction form
717,660.09/990,368.61 = 395,367.36/x - Step 3: Cross multiply
717,660.09x = 990,368.61 × 395,367.36 - Step 4: Simplify right side
717,660.09x = 391,559,422,762.57 - Step 5: Solve for x
x = 391,559,422,762.57/717,660.09 - Step 6: Final answer
x = 545,605.68
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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.