Finding the Fourth Proportional to 1,957,125,832.20, 2,935,688,748.30 and 664,661,320.20
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Solution
The fourth proportional to 1,957,125,832.20, 2,935,688,748.30 and 664,661,320.20 is: 996,991,980.30
Step by Step Solution
- Step 1: Write the proportion equation
1,957,125,832.20 : 2,935,688,748.30 = 664,661,320.20 : x - Step 2: Convert to fraction form
1,957,125,832.20/2,935,688,748.30 = 664,661,320.20/x - Step 3: Cross multiply
1,957,125,832.20x = 2,935,688,748.30 × 664,661,320.20 - Step 4: Simplify right side
1,957,125,832.20x = 1,951,238,759,141,363,712 - Step 5: Solve for x
x = 1,951,238,759,141,363,712/1,957,125,832.20 - Step 6: Final answer
x = 996,991,980.30
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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.