Finding the Fourth Proportional to 430,638,512.70, 645,957,769.05 and 201,056,000.70
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Solution
The fourth proportional to 430,638,512.70, 645,957,769.05 and 201,056,000.70 is: 301,584,001.05
Step by Step Solution
- Step 1: Write the proportion equation
430,638,512.70 : 645,957,769.05 = 201,056,000.70 : x - Step 2: Convert to fraction form
430,638,512.70/645,957,769.05 = 201,056,000.70/x - Step 3: Cross multiply
430,638,512.70x = 645,957,769.05 × 201,056,000.70 - Step 4: Simplify right side
430,638,512.70x = 129,873,685,666,287,216 - Step 5: Solve for x
x = 129,873,685,666,287,216/430,638,512.70 - Step 6: Final answer
x = 301,584,001.05
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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.