Finding the Fourth Proportional to 709,717.95, 979,279.75 and 403,776.47
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Solution
The fourth proportional to 709,717.95, 979,279.75 and 403,776.47 is: 557,136.99
Step by Step Solution
- Step 1: Write the proportion equation
709,717.95 : 979,279.75 = 403,776.47 : x - Step 2: Convert to fraction form
709,717.95/979,279.75 = 403,776.47/x - Step 3: Cross multiply
709,717.95x = 979,279.75 × 403,776.47 - Step 4: Simplify right side
709,717.95x = 395,410,119,660.56 - Step 5: Solve for x
x = 395,410,119,660.56/709,717.95 - Step 6: Final answer
x = 557,136.99
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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.