Finding the Fourth Proportional to 422,533,623.16, 583,200,125.58 and 257,612,128.12
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Solution
The fourth proportional to 422,533,623.16, 583,200,125.58 and 257,612,128.12 is: 355,567,976.69
Step by Step Solution
- Step 1: Write the proportion equation
422,533,623.16 : 583,200,125.58 = 257,612,128.12 : x - Step 2: Convert to fraction form
422,533,623.16/583,200,125.58 = 257,612,128.12/x - Step 3: Cross multiply
422,533,623.16x = 583,200,125.58 × 257,612,128.12 - Step 4: Simplify right side
422,533,623.16x = 150,239,425,470,515,072 - Step 5: Solve for x
x = 150,239,425,470,515,072/422,533,623.16 - Step 6: Final answer
x = 355,567,976.69
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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.