Finding the Fourth Proportional to 419,904,750.10, 629,857,125.15 and 386,742,831.70
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Solution
The fourth proportional to 419,904,750.10, 629,857,125.15 and 386,742,831.70 is: 580,114,247.55
Step by Step Solution
- Step 1: Write the proportion equation
419,904,750.10 : 629,857,125.15 = 386,742,831.70 : x - Step 2: Convert to fraction form
419,904,750.10/629,857,125.15 = 386,742,831.70/x - Step 3: Cross multiply
419,904,750.10x = 629,857,125.15 × 386,742,831.70 - Step 4: Simplify right side
419,904,750.10x = 243,592,728,146,932,256 - Step 5: Solve for x
x = 243,592,728,146,932,256/419,904,750.10 - Step 6: Final answer
x = 580,114,247.55
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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.