Finding the Fourth Proportional to 920,252,500.20, 1,380,378,750.30 and 714,667,501.80
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Solution
The fourth proportional to 920,252,500.20, 1,380,378,750.30 and 714,667,501.80 is: 1,072,001,252.70
Step by Step Solution
- Step 1: Write the proportion equation
920,252,500.20 : 1,380,378,750.30 = 714,667,501.80 : x - Step 2: Convert to fraction form
920,252,500.20/1,380,378,750.30 = 714,667,501.80/x - Step 3: Cross multiply
920,252,500.20x = 1,380,378,750.30 × 714,667,501.80 - Step 4: Simplify right side
920,252,500.20x = 986,511,833,014,706,944 - Step 5: Solve for x
x = 986,511,833,014,706,944/920,252,500.20 - Step 6: Final answer
x = 1,072,001,252.70
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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.