Finding the Fourth Proportional to 912,276.47, 1,258,665.21 and 636,626.99
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Solution
The fourth proportional to 912,276.47, 1,258,665.21 and 636,626.99 is: 878,352.42
Step by Step Solution
- Step 1: Write the proportion equation
912,276.47 : 1,258,665.21 = 636,626.99 : x - Step 2: Convert to fraction form
912,276.47/1,258,665.21 = 636,626.99/x - Step 3: Cross multiply
912,276.47x = 1,258,665.21 × 636,626.99 - Step 4: Simplify right side
912,276.47x = 801,300,237,766.69 - Step 5: Solve for x
x = 801,300,237,766.69/912,276.47 - Step 6: Final answer
x = 878,352.42
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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.