Finding the Fourth Proportional to 709,764.16, 979,489.36 and 387,487.84
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Solution
The fourth proportional to 709,764.16, 979,489.36 and 387,487.84 is: 534,741.31
Step by Step Solution
- Step 1: Write the proportion equation
709,764.16 : 979,489.36 = 387,487.84 : x - Step 2: Convert to fraction form
709,764.16/979,489.36 = 387,487.84/x - Step 3: Cross multiply
709,764.16x = 979,489.36 × 387,487.84 - Step 4: Simplify right side
709,764.16x = 379,540,216,409.38 - Step 5: Solve for x
x = 379,540,216,409.38/709,764.16 - Step 6: Final answer
x = 534,741.31
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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.