Finding the Fourth Proportional to 8,159,432,274.40, 12,239,148,411.60 and 2,639,248,319.20
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Solution
The fourth proportional to 8,159,432,274.40, 12,239,148,411.60 and 2,639,248,319.20 is: 3,958,872,478.80
Step by Step Solution
- Step 1: Write the proportion equation
8,159,432,274.40 : 12,239,148,411.60 = 2,639,248,319.20 : x - Step 2: Convert to fraction form
8,159,432,274.40/12,239,148,411.60 = 2,639,248,319.20/x - Step 3: Cross multiply
8,159,432,274.40x = 12,239,148,411.60 × 2,639,248,319.20 - Step 4: Simplify right side
8,159,432,274.40x = 32,302,151,873,754,648,576 - Step 5: Solve for x
x = 32,302,151,873,754,648,576/8,159,432,274.40 - Step 6: Final answer
x = 3,958,872,478.80
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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.