Finding the Fourth Proportional to 1,189,417.70, 1,641,354.68 and 645,542.55
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Solution
The fourth proportional to 1,189,417.70, 1,641,354.68 and 645,542.55 is: 890,826.06
Step by Step Solution
- Step 1: Write the proportion equation
1,189,417.70 : 1,641,354.68 = 645,542.55 : x - Step 2: Convert to fraction form
1,189,417.70/1,641,354.68 = 645,542.55/x - Step 3: Cross multiply
1,189,417.70x = 1,641,354.68 × 645,542.55 - Step 4: Simplify right side
1,189,417.70x = 1,059,564,285,581.63 - Step 5: Solve for x
x = 1,059,564,285,581.63/1,189,417.70 - Step 6: Final answer
x = 890,826.06
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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.