Finding the Fourth Proportional to 861,438.09, 1,292,444.86 and 381,600.70
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Solution
The fourth proportional to 861,438.09, 1,292,444.86 and 381,600.70 is: 572,528.51
Step by Step Solution
- Step 1: Write the proportion equation
861,438.09 : 1,292,444.86 = 381,600.70 : x - Step 2: Convert to fraction form
861,438.09/1,292,444.86 = 381,600.70/x - Step 3: Cross multiply
861,438.09x = 1,292,444.86 × 381,600.70 - Step 4: Simplify right side
861,438.09x = 493,197,862,333.40 - Step 5: Solve for x
x = 493,197,862,333.40/861,438.09 - Step 6: Final answer
x = 572,528.51
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.