Finding the Fourth Proportional to 1,299,079,627.20, 1,948,619,440.80 and 329,731,243.20
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Solution
The fourth proportional to 1,299,079,627.20, 1,948,619,440.80 and 329,731,243.20 is: 494,596,864.80
Step by Step Solution
- Step 1: Write the proportion equation
1,299,079,627.20 : 1,948,619,440.80 = 329,731,243.20 : x - Step 2: Convert to fraction form
1,299,079,627.20/1,948,619,440.80 = 329,731,243.20/x - Step 3: Cross multiply
1,299,079,627.20x = 1,948,619,440.80 × 329,731,243.20 - Step 4: Simplify right side
1,299,079,627.20x = 642,520,710,738,672,768 - Step 5: Solve for x
x = 642,520,710,738,672,768/1,299,079,627.20 - Step 6: Final answer
x = 494,596,864.80
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1.5x scale
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.