Finding the Fourth Proportional to 8,488,584.70, 12,732,877.05 and 8,320,623.10
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Solution
The fourth proportional to 8,488,584.70, 12,732,877.05 and 8,320,623.10 is: 12,480,934.65
Step by Step Solution
- Step 1: Write the proportion equation
8,488,584.70 : 12,732,877.05 = 8,320,623.10 : x - Step 2: Convert to fraction form
8,488,584.70/12,732,877.05 = 8,320,623.10/x - Step 3: Cross multiply
8,488,584.70x = 12,732,877.05 × 8,320,623.10 - Step 4: Simplify right side
8,488,584.70x = 105,945,470,911,689.86 - Step 5: Solve for x
x = 105,945,470,911,689.86/8,488,584.70 - Step 6: Final answer
x = 12,480,934.65
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Double scale
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Similar ratio
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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.