Finding the Fourth Proportional to 2,085,996,129.80, 3,129,414,098.70 and 612,133,089.80
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Solution
The fourth proportional to 2,085,996,129.80, 3,129,414,098.70 and 612,133,089.80 is: 918,322,855.03
Step by Step Solution
- Step 1: Write the proportion equation
2,085,996,129.80 : 3,129,414,098.70 = 612,133,089.80 : x - Step 2: Convert to fraction form
2,085,996,129.80/3,129,414,098.70 = 612,133,089.80/x - Step 3: Cross multiply
2,085,996,129.80x = 3,129,414,098.70 × 612,133,089.80 - Step 4: Simplify right side
2,085,996,129.80x = 1,915,617,921,500,912,896 - Step 5: Solve for x
x = 1,915,617,921,500,912,896/2,085,996,129.80 - Step 6: Final answer
x = 918,322,855.03
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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.