Finding the Fourth Proportional to 709,901.81, 979,657.06 and 387,610.91
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Solution
The fourth proportional to 709,901.81, 979,657.06 and 387,610.91 is: 534,898.99
Step by Step Solution
- Step 1: Write the proportion equation
709,901.81 : 979,657.06 = 387,610.91 : x - Step 2: Convert to fraction form
709,901.81/979,657.06 = 387,610.91/x - Step 3: Cross multiply
709,901.81x = 979,657.06 × 387,610.91 - Step 4: Simplify right side
709,901.81x = 379,725,764,514.53 - Step 5: Solve for x
x = 379,725,764,514.53/709,901.81 - Step 6: Final answer
x = 534,898.99
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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.