Finding the Fourth Proportional to 708,626.92, 977,876.34 and 386,330.68
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Solution
The fourth proportional to 708,626.92, 977,876.34 and 386,330.68 is: 533,120.63
Step by Step Solution
- Step 1: Write the proportion equation
708,626.92 : 977,876.34 = 386,330.68 : x - Step 2: Convert to fraction form
708,626.92/977,876.34 = 386,330.68/x - Step 3: Cross multiply
708,626.92x = 977,876.34 × 386,330.68 - Step 4: Simplify right side
708,626.92x = 377,783,631,388.11 - Step 5: Solve for x
x = 377,783,631,388.11/708,626.92 - Step 6: Final answer
x = 533,120.63
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1.5x scale
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.