Finding the Fourth Proportional to 668,201.91, 922,252.68 and 396,420.72
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Solution
The fourth proportional to 668,201.91, 922,252.68 and 396,420.72 is: 547,140.12
Step by Step Solution
- Step 1: Write the proportion equation
668,201.91 : 922,252.68 = 396,420.72 : x - Step 2: Convert to fraction form
668,201.91/922,252.68 = 396,420.72/x - Step 3: Cross multiply
668,201.91x = 922,252.68 × 396,420.72 - Step 4: Simplify right side
668,201.91x = 365,600,071,427.53 - Step 5: Solve for x
x = 365,600,071,427.53/668,201.91 - Step 6: Final answer
x = 547,140.12
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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.