Finding the Fourth Proportional to 394,486,831.10, 591,730,246.65 and 164,620,883.90
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Solution
The fourth proportional to 394,486,831.10, 591,730,246.65 and 164,620,883.90 is: 246,931,325.85
Step by Step Solution
- Step 1: Write the proportion equation
394,486,831.10 : 591,730,246.65 = 164,620,883.90 : x - Step 2: Convert to fraction form
394,486,831.10/591,730,246.65 = 164,620,883.90/x - Step 3: Cross multiply
394,486,831.10x = 591,730,246.65 × 164,620,883.90 - Step 4: Simplify right side
394,486,831.10x = 97,411,156,233,888,016 - Step 5: Solve for x
x = 97,411,156,233,888,016/394,486,831.10 - Step 6: Final answer
x = 246,931,325.85
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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.