Finding the Fourth Proportional to 809,679,063.15, 1,214,966,748.90 and 395,159,318.09
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Solution
The fourth proportional to 809,679,063.15, 1,214,966,748.90 and 395,159,318.09 is: 592,957,696.26
Step by Step Solution
- Step 1: Write the proportion equation
809,679,063.15 : 1,214,966,748.90 = 395,159,318.09 : x - Step 2: Convert to fraction form
809,679,063.15/1,214,966,748.90 = 395,159,318.09/x - Step 3: Cross multiply
809,679,063.15x = 1,214,966,748.90 × 395,159,318.09 - Step 4: Simplify right side
809,679,063.15x = 480,105,431,997,348,288 - Step 5: Solve for x
x = 480,105,431,997,348,288/809,679,063.15 - Step 6: Final answer
x = 592,957,696.26
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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.