Finding the Fourth Proportional to 684,378.23, 943,997.27 and 438,974.55
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Solution
The fourth proportional to 684,378.23, 943,997.27 and 438,974.55 is: 605,499.65
Step by Step Solution
- Step 1: Write the proportion equation
684,378.23 : 943,997.27 = 438,974.55 : x - Step 2: Convert to fraction form
684,378.23/943,997.27 = 438,974.55/x - Step 3: Cross multiply
684,378.23x = 943,997.27 × 438,974.55 - Step 4: Simplify right side
684,378.23x = 414,390,774,604.61 - Step 5: Solve for x
x = 414,390,774,604.61/684,378.23 - Step 6: Final answer
x = 605,499.65
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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.