Finding the Fourth Proportional to 825,725.70, 1,238,588.55 and 471,431.70
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Solution
The fourth proportional to 825,725.70, 1,238,588.55 and 471,431.70 is: 707,147.55
Step by Step Solution
- Step 1: Write the proportion equation
825,725.70 : 1,238,588.55 = 471,431.70 : x - Step 2: Convert to fraction form
825,725.70/1,238,588.55 = 471,431.70/x - Step 3: Cross multiply
825,725.70x = 1,238,588.55 × 471,431.70 - Step 4: Simplify right side
825,725.70x = 583,909,905,727.04 - Step 5: Solve for x
x = 583,909,905,727.04/825,725.70 - Step 6: Final answer
x = 707,147.55
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1.5x scale
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.