Finding the Fourth Proportional to 470,052,979.20, 704,594,246.40 and 211,392,115.20
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Solution
The fourth proportional to 470,052,979.20, 704,594,246.40 and 211,392,115.20 is: 316,869,958.70
Step by Step Solution
- Step 1: Write the proportion equation
470,052,979.20 : 704,594,246.40 = 211,392,115.20 : x - Step 2: Convert to fraction form
470,052,979.20/704,594,246.40 = 211,392,115.20/x - Step 3: Cross multiply
470,052,979.20x = 704,594,246.40 × 211,392,115.20 - Step 4: Simplify right side
470,052,979.20x = 148,945,668,104,245,984 - Step 5: Solve for x
x = 148,945,668,104,245,984/470,052,979.20 - Step 6: Final answer
x = 316,869,958.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.