Finding the Fourth Proportional to 857,533.12, 1,183,397.40 and 470,351.70
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Solution
The fourth proportional to 857,533.12, 1,183,397.40 and 470,351.70 is: 649,086.28
Step by Step Solution
- Step 1: Write the proportion equation
857,533.12 : 1,183,397.40 = 470,351.70 : x - Step 2: Convert to fraction form
857,533.12/1,183,397.40 = 470,351.70/x - Step 3: Cross multiply
857,533.12x = 1,183,397.40 × 470,351.70 - Step 4: Simplify right side
857,533.12x = 556,612,978,865.58 - Step 5: Solve for x
x = 556,612,978,865.58/857,533.12 - Step 6: Final answer
x = 649,086.28
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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.