Finding the Fourth Proportional to 631,855,470.11, 947,912,471.71 and 217,278,450.05
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Solution
The fourth proportional to 631,855,470.11, 947,912,471.71 and 217,278,450.05 is: 325,962,126.43
Step by Step Solution
- Step 1: Write the proportion equation
631,855,470.11 : 947,912,471.71 = 217,278,450.05 : x - Step 2: Convert to fraction form
631,855,470.11/947,912,471.71 = 217,278,450.05/x - Step 3: Cross multiply
631,855,470.11x = 947,912,471.71 × 217,278,450.05 - Step 4: Simplify right side
631,855,470.11x = 205,960,952,630,930,496 - Step 5: Solve for x
x = 205,960,952,630,930,496/631,855,470.11 - Step 6: Final answer
x = 325,962,126.43
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1.5x scale
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.