Finding the Fourth Proportional to 1,618,191,749.80, 2,423,181,896.70 and 890,358,149.80
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Solution
The fourth proportional to 1,618,191,749.80, 2,423,181,896.70 and 890,358,149.80 is: 1,333,278,179.45
Step by Step Solution
- Step 1: Write the proportion equation
1,618,191,749.80 : 2,423,181,896.70 = 890,358,149.80 : x - Step 2: Convert to fraction form
1,618,191,749.80/2,423,181,896.70 = 890,358,149.80/x - Step 3: Cross multiply
1,618,191,749.80x = 2,423,181,896.70 × 890,358,149.80 - Step 4: Simplify right side
1,618,191,749.80x = 2,157,499,750,174,666,496 - Step 5: Solve for x
x = 2,157,499,750,174,666,496/1,618,191,749.80 - Step 6: Final answer
x = 1,333,278,179.45
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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.