Finding the Fourth Proportional to 980,318.70, 1,352,443.05 and 617,101.74
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Solution
The fourth proportional to 980,318.70, 1,352,443.05 and 617,101.74 is: 851,350.65
Step by Step Solution
- Step 1: Write the proportion equation
980,318.70 : 1,352,443.05 = 617,101.74 : x - Step 2: Convert to fraction form
980,318.70/1,352,443.05 = 617,101.74/x - Step 3: Cross multiply
980,318.70x = 1,352,443.05 × 617,101.74 - Step 4: Simplify right side
980,318.70x = 834,594,959,405.91 - Step 5: Solve for x
x = 834,594,959,405.91/980,318.70 - Step 6: Final answer
x = 851,350.65
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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.