Finding the Fourth Proportional to 862,154.19, 1,189,771.95 and 499,788.09
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Solution
The fourth proportional to 862,154.19, 1,189,771.95 and 499,788.09 is: 689,707.08
Step by Step Solution
- Step 1: Write the proportion equation
862,154.19 : 1,189,771.95 = 499,788.09 : x - Step 2: Convert to fraction form
862,154.19/1,189,771.95 = 499,788.09/x - Step 3: Cross multiply
862,154.19x = 1,189,771.95 × 499,788.09 - Step 4: Simplify right side
862,154.19x = 594,633,850,426.08 - Step 5: Solve for x
x = 594,633,850,426.08/862,154.19 - Step 6: Final answer
x = 689,707.08
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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.