Finding the Fourth Proportional to 428,785,738.75, 591,390,727.04 and 310,153,347.59
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Solution
The fourth proportional to 428,785,738.75, 591,390,727.04 and 310,153,347.59 is: 427,770,322.45
Step by Step Solution
- Step 1: Write the proportion equation
428,785,738.75 : 591,390,727.04 = 310,153,347.59 : x - Step 2: Convert to fraction form
428,785,738.75/591,390,727.04 = 310,153,347.59/x - Step 3: Cross multiply
428,785,738.75x = 591,390,727.04 × 310,153,347.59 - Step 4: Simplify right side
428,785,738.75x = 183,421,813,723,589,152 - Step 5: Solve for x
x = 183,421,813,723,589,152/428,785,738.75 - Step 6: Final answer
x = 427,770,322.45
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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.