Finding the Fourth Proportional to 7,771,570.20, 11,648,801.70 and 2,720,280.60
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Solution
The fourth proportional to 7,771,570.20, 11,648,801.70 and 2,720,280.60 is: 4,077,426.89
Step by Step Solution
- Step 1: Write the proportion equation
7,771,570.20 : 11,648,801.70 = 2,720,280.60 : x - Step 2: Convert to fraction form
7,771,570.20/11,648,801.70 = 2,720,280.60/x - Step 3: Cross multiply
7,771,570.20x = 11,648,801.70 × 2,720,280.60 - Step 4: Simplify right side
7,771,570.20x = 31,688,009,277,757.02 - Step 5: Solve for x
x = 31,688,009,277,757.02/7,771,570.20 - Step 6: Final answer
x = 4,077,426.89
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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.