Finding the Fourth Proportional to 709,408.49, 978,975.63 and 387,124.07
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Solution
The fourth proportional to 709,408.49, 978,975.63 and 387,124.07 is: 534,226.80
Step by Step Solution
- Step 1: Write the proportion equation
709,408.49 : 978,975.63 = 387,124.07 : x - Step 2: Convert to fraction form
709,408.49/978,975.63 = 387,124.07/x - Step 3: Cross multiply
709,408.49x = 978,975.63 × 387,124.07 - Step 4: Simplify right side
709,408.49x = 378,985,025,421.54 - Step 5: Solve for x
x = 378,985,025,421.54/709,408.49 - Step 6: Final answer
x = 534,226.80
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.