Finding the Fourth Proportional to 826,047,395.40, 1,236,201,311.70 and 757,172,641.80
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Solution
The fourth proportional to 826,047,395.40, 1,236,201,311.70 and 757,172,641.80 is: 1,133,128,459.93
Step by Step Solution
- Step 1: Write the proportion equation
826,047,395.40 : 1,236,201,311.70 = 757,172,641.80 : x - Step 2: Convert to fraction form
826,047,395.40/1,236,201,311.70 = 757,172,641.80/x - Step 3: Cross multiply
826,047,395.40x = 1,236,201,311.70 × 757,172,641.80 - Step 4: Simplify right side
826,047,395.40x = 936,017,812,976,514,176 - Step 5: Solve for x
x = 936,017,812,976,514,176/826,047,395.40 - Step 6: Final answer
x = 1,133,128,459.93
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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.