Finding the Fourth Proportional to 553,576.81, 763,992.44 and 338,858.77
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Solution
The fourth proportional to 553,576.81, 763,992.44 and 338,858.77 is: 467,659.65
Step by Step Solution
- Step 1: Write the proportion equation
553,576.81 : 763,992.44 = 338,858.77 : x - Step 2: Convert to fraction form
553,576.81/763,992.44 = 338,858.77/x - Step 3: Cross multiply
553,576.81x = 763,992.44 × 338,858.77 - Step 4: Simplify right side
553,576.81x = 258,885,536,813.41 - Step 5: Solve for x
x = 258,885,536,813.41/553,576.81 - Step 6: Final answer
x = 467,659.65
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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.