Finding the Fourth Proportional to 8,312,658.40, 12,465,877.20 and 2,919,224.80
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Solution
The fourth proportional to 8,312,658.40, 12,465,877.20 and 2,919,224.80 is: 4,377,744.90
Step by Step Solution
- Step 1: Write the proportion equation
8,312,658.40 : 12,465,877.20 = 2,919,224.80 : x - Step 2: Convert to fraction form
8,312,658.40/12,465,877.20 = 2,919,224.80/x - Step 3: Cross multiply
8,312,658.40x = 12,465,877.20 × 2,919,224.80 - Step 4: Simplify right side
8,312,658.40x = 36,390,697,875,994.55 - Step 5: Solve for x
x = 36,390,697,875,994.55/8,312,658.40 - Step 6: Final answer
x = 4,377,744.90
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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.