Finding the Fourth Proportional to 756,680,680.80, 1,135,021,021.20 and 347,736,831.30
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Solution
The fourth proportional to 756,680,680.80, 1,135,021,021.20 and 347,736,831.30 is: 521,605,246.95
Step by Step Solution
- Step 1: Write the proportion equation
756,680,680.80 : 1,135,021,021.20 = 347,736,831.30 : x - Step 2: Convert to fraction form
756,680,680.80/1,135,021,021.20 = 347,736,831.30/x - Step 3: Cross multiply
756,680,680.80x = 1,135,021,021.20 × 347,736,831.30 - Step 4: Simplify right side
756,680,680.80x = 394,688,613,370,978,176 - Step 5: Solve for x
x = 394,688,613,370,978,176/756,680,680.80 - Step 6: Final answer
x = 521,605,246.95
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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.