Finding the Fourth Proportional to 657,163.05, 906,885.09 and 355,357.05
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Solution
The fourth proportional to 657,163.05, 906,885.09 and 355,357.05 is: 490,392.77
Step by Step Solution
- Step 1: Write the proportion equation
657,163.05 : 906,885.09 = 355,357.05 : x - Step 2: Convert to fraction form
657,163.05/906,885.09 = 355,357.05/x - Step 3: Cross multiply
657,163.05x = 906,885.09 × 355,357.05 - Step 4: Simplify right side
657,163.05x = 322,268,010,271.38 - Step 5: Solve for x
x = 322,268,010,271.38/657,163.05 - Step 6: Final answer
x = 490,392.77
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1.5x scale
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.