Finding the Fourth Proportional to 478,685,609.99, 718,246,584.33 and 245,679,948.45
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Solution
The fourth proportional to 478,685,609.99, 718,246,584.33 and 245,679,948.45 is: 368,631,895.62
Step by Step Solution
- Step 1: Write the proportion equation
478,685,609.99 : 718,246,584.33 = 245,679,948.45 : x - Step 2: Convert to fraction form
478,685,609.99/718,246,584.33 = 245,679,948.45/x - Step 3: Cross multiply
478,685,609.99x = 718,246,584.33 × 245,679,948.45 - Step 4: Simplify right side
478,685,609.99x = 176,458,783,816,254,240 - Step 5: Solve for x
x = 176,458,783,816,254,240/478,685,609.99 - Step 6: Final answer
x = 368,631,895.62
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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.