Finding the Fourth Proportional to 709,708.55, 979,360.38 and 387,356.09
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Solution
The fourth proportional to 709,708.55, 979,360.38 and 387,356.09 is: 534,530.98
Step by Step Solution
- Step 1: Write the proportion equation
709,708.55 : 979,360.38 = 387,356.09 : x - Step 2: Convert to fraction form
709,708.55/979,360.38 = 387,356.09/x - Step 3: Cross multiply
709,708.55x = 979,360.38 × 387,356.09 - Step 4: Simplify right side
709,708.55x = 379,361,202,600.91 - Step 5: Solve for x
x = 379,361,202,600.91/709,708.55 - Step 6: Final answer
x = 534,530.98
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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.