Finding the Fourth Proportional to 861,971.02, 1,189,532.69 and 499,421.09
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Solution
The fourth proportional to 861,971.02, 1,189,532.69 and 499,421.09 is: 689,208.46
Step by Step Solution
- Step 1: Write the proportion equation
861,971.02 : 1,189,532.69 = 499,421.09 : x - Step 2: Convert to fraction form
861,971.02/1,189,532.69 = 499,421.09/x - Step 3: Cross multiply
861,971.02x = 1,189,532.69 × 499,421.09 - Step 4: Simplify right side
861,971.02x = 594,077,714,979.99 - Step 5: Solve for x
x = 594,077,714,979.99/861,971.02 - Step 6: Final answer
x = 689,208.46
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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.