Finding the Fourth Proportional to 388,940, 583,410 and 126,284
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Solution
The fourth proportional to 388,940, 583,410 and 126,284 is: 189,426
Step by Step Solution
- Step 1: Write the proportion equation
388,940 : 583,410 = 126,284 : x - Step 2: Convert to fraction form
388,940/583,410 = 126,284/x - Step 3: Cross multiply
388,940x = 583,410 × 126,284 - Step 4: Simplify right side
388,940x = 73,675,348,440 - Step 5: Solve for x
x = 73,675,348,440/388,940 - Step 6: Final answer
x = 189,426
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.