Finding the Fourth Proportional to 5,130,640.80, 7,690,885.20 and 2,430,219.60
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Solution
The fourth proportional to 5,130,640.80, 7,690,885.20 and 2,430,219.60 is: 3,642,925.06
Step by Step Solution
- Step 1: Write the proportion equation
5,130,640.80 : 7,690,885.20 = 2,430,219.60 : x - Step 2: Convert to fraction form
5,130,640.80/7,690,885.20 = 2,430,219.60/x - Step 3: Cross multiply
5,130,640.80x = 7,690,885.20 × 2,430,219.60 - Step 4: Simplify right side
5,130,640.80x = 18,690,539,954,389.92 - Step 5: Solve for x
x = 18,690,539,954,389.92/5,130,640.80 - Step 6: Final answer
x = 3,642,925.06
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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.