Finding the Fourth Proportional to 451,480,830.75, 677,335,013.87 and 128,364,702.75
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Solution
The fourth proportional to 451,480,830.75, 677,335,013.87 and 128,364,702.75 is: 192,579,400.49
Step by Step Solution
- Step 1: Write the proportion equation
451,480,830.75 : 677,335,013.87 = 128,364,702.75 : x - Step 2: Convert to fraction form
451,480,830.75/677,335,013.87 = 128,364,702.75/x - Step 3: Cross multiply
451,480,830.75x = 677,335,013.87 × 128,364,702.75 - Step 4: Simplify right side
451,480,830.75x = 86,945,907,716,947,856 - Step 5: Solve for x
x = 86,945,907,716,947,856/451,480,830.75 - Step 6: Final answer
x = 192,579,400.49
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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.