Finding the Fourth Proportional to 625,427.36, 863,132.94 and 380,507.68
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Solution
The fourth proportional to 625,427.36, 863,132.94 and 380,507.68 is: 525,126.87
Step by Step Solution
- Step 1: Write the proportion equation
625,427.36 : 863,132.94 = 380,507.68 : x - Step 2: Convert to fraction form
625,427.36/863,132.94 = 380,507.68/x - Step 3: Cross multiply
625,427.36x = 863,132.94 × 380,507.68 - Step 4: Simplify right side
625,427.36x = 328,428,712,530.98 - Step 5: Solve for x
x = 328,428,712,530.98/625,427.36 - Step 6: Final answer
x = 525,126.87
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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.