Finding the Fourth Proportional to 1,189,145.99, 1,641,013.14 and 645,267.94
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Solution
The fourth proportional to 1,189,145.99, 1,641,013.14 and 645,267.94 is: 890,465.24
Step by Step Solution
- Step 1: Write the proportion equation
1,189,145.99 : 1,641,013.14 = 645,267.94 : x - Step 2: Convert to fraction form
1,189,145.99/1,641,013.14 = 645,267.94/x - Step 3: Cross multiply
1,189,145.99x = 1,641,013.14 × 645,267.94 - Step 4: Simplify right side
1,189,145.99x = 1,058,893,168,360.73 - Step 5: Solve for x
x = 1,058,893,168,360.73/1,189,145.99 - Step 6: Final answer
x = 890,465.24
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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.