Finding the Fourth Proportional to 709,319.48, 978,855.84 and 403,395.96
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Solution
The fourth proportional to 709,319.48, 978,855.84 and 403,395.96 is: 556,683.56
Step by Step Solution
- Step 1: Write the proportion equation
709,319.48 : 978,855.84 = 403,395.96 : x - Step 2: Convert to fraction form
709,319.48/978,855.84 = 403,395.96/x - Step 3: Cross multiply
709,319.48x = 978,855.84 × 403,395.96 - Step 4: Simplify right side
709,319.48x = 394,866,491,278.41 - Step 5: Solve for x
x = 394,866,491,278.41/709,319.48 - Step 6: Final answer
x = 556,683.56
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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.