Finding the Fourth Proportional to 8,520,963,756.80, 12,781,445,635.20 and 6,454,721,148.80
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Solution
The fourth proportional to 8,520,963,756.80, 12,781,445,635.20 and 6,454,721,148.80 is: 9,682,081,723.20
Step by Step Solution
- Step 1: Write the proportion equation
8,520,963,756.80 : 12,781,445,635.20 = 6,454,721,148.80 : x - Step 2: Convert to fraction form
8,520,963,756.80/12,781,445,635.20 = 6,454,721,148.80/x - Step 3: Cross multiply
8,520,963,756.80x = 12,781,445,635.20 × 6,454,721,148.80 - Step 4: Simplify right side
8,520,963,756.80x = 82,500,667,453,762,895,872 - Step 5: Solve for x
x = 82,500,667,453,762,895,872/8,520,963,756.80 - Step 6: Final answer
x = 9,682,081,723.20
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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.