Finding the Fourth Proportional to 911,917.70, 1,258,451.36 and 498,455.05
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Solution
The fourth proportional to 911,917.70, 1,258,451.36 and 498,455.05 is: 687,870.66
Step by Step Solution
- Step 1: Write the proportion equation
911,917.70 : 1,258,451.36 = 498,455.05 : x - Step 2: Convert to fraction form
911,917.70/1,258,451.36 = 498,455.05/x - Step 3: Cross multiply
911,917.70x = 1,258,451.36 × 498,455.05 - Step 4: Simplify right side
911,917.70x = 627,281,432,017.65 - Step 5: Solve for x
x = 627,281,432,017.65/911,917.70 - Step 6: Final answer
x = 687,870.66
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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.