Finding the Fourth Proportional to 1,189,145.08, 1,641,011.88 and 645,267.04
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Solution
The fourth proportional to 1,189,145.08, 1,641,011.88 and 645,267.04 is: 890,463.99
Step by Step Solution
- Step 1: Write the proportion equation
1,189,145.08 : 1,641,011.88 = 645,267.04 : x - Step 2: Convert to fraction form
1,189,145.08/1,641,011.88 = 645,267.04/x - Step 3: Cross multiply
1,189,145.08x = 1,641,011.88 × 645,267.04 - Step 4: Simplify right side
1,189,145.08x = 1,058,890,876,729.66 - Step 5: Solve for x
x = 1,058,890,876,729.66/1,189,145.08 - Step 6: Final answer
x = 890,463.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.