Finding the Fourth Proportional to 398,642,432.60, 597,963,648.90 and 252,602,445.80
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Solution
The fourth proportional to 398,642,432.60, 597,963,648.90 and 252,602,445.80 is: 378,903,668.70
Step by Step Solution
- Step 1: Write the proportion equation
398,642,432.60 : 597,963,648.90 = 252,602,445.80 : x - Step 2: Convert to fraction form
398,642,432.60/597,963,648.90 = 252,602,445.80/x - Step 3: Cross multiply
398,642,432.60x = 597,963,648.90 × 252,602,445.80 - Step 4: Simplify right side
398,642,432.60x = 151,047,080,211,632,480 - Step 5: Solve for x
x = 151,047,080,211,632,480/398,642,432.60 - Step 6: Final answer
x = 378,903,668.70
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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.