Finding the Fourth Proportional to 1,387,465.55, 2,081,557.41 and 427,899.94
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Solution
The fourth proportional to 1,387,465.55, 2,081,557.41 and 427,899.94 is: 641,960.65
Step by Step Solution
- Step 1: Write the proportion equation
1,387,465.55 : 2,081,557.41 = 427,899.94 : x - Step 2: Convert to fraction form
1,387,465.55/2,081,557.41 = 427,899.94/x - Step 3: Cross multiply
1,387,465.55x = 2,081,557.41 × 427,899.94 - Step 4: Simplify right side
1,387,465.55x = 890,698,280,437.77 - Step 5: Solve for x
x = 890,698,280,437.77/1,387,465.55 - Step 6: Final answer
x = 641,960.65
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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.