Finding the Fourth Proportional to 668,112.99, 921,956.22 and 396,206.52
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Solution
The fourth proportional to 668,112.99, 921,956.22 and 396,206.52 is: 546,741.45
Step by Step Solution
- Step 1: Write the proportion equation
668,112.99 : 921,956.22 = 396,206.52 : x - Step 2: Convert to fraction form
668,112.99/921,956.22 = 396,206.52/x - Step 3: Cross multiply
668,112.99x = 921,956.22 × 396,206.52 - Step 4: Simplify right side
668,112.99x = 365,285,065,518.55 - Step 5: Solve for x
x = 365,285,065,518.55/668,112.99 - Step 6: Final answer
x = 546,741.45
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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.