Finding the Fourth Proportional to 408,678.81, 613,041.21 and 124,378.53
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Solution
The fourth proportional to 408,678.81, 613,041.21 and 124,378.53 is: 186,574.79
Step by Step Solution
- Step 1: Write the proportion equation
408,678.81 : 613,041.21 = 124,378.53 : x - Step 2: Convert to fraction form
408,678.81/613,041.21 = 124,378.53/x - Step 3: Cross multiply
408,678.81x = 613,041.21 × 124,378.53 - Step 4: Simplify right side
408,678.81x = 76,249,164,529.22 - Step 5: Solve for x
x = 76,249,164,529.22/408,678.81 - Step 6: Final answer
x = 186,574.79
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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.