Finding the Fourth Proportional to 12,278,781.60, 18,430,947 and 9,043,971.68
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Solution
The fourth proportional to 12,278,781.60, 18,430,947 and 9,043,971.68 is: 13,575,366.69
Step by Step Solution
- Step 1: Write the proportion equation
12,278,781.60 : 18,430,947 = 9,043,971.68 : x - Step 2: Convert to fraction form
12,278,781.60/18,430,947 = 9,043,971.68/x - Step 3: Cross multiply
12,278,781.60x = 18,430,947 × 9,043,971.68 - Step 4: Simplify right side
12,278,781.60x = 166,688,962,703,580.97 - Step 5: Solve for x
x = 166,688,962,703,580.97/12,278,781.60 - Step 6: Final answer
x = 13,575,366.69
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.