Finding the Fourth Proportional to 2,162,784,211.68, 2,984,700,899.28 and 1,223,127,369.12
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Solution
The fourth proportional to 2,162,784,211.68, 2,984,700,899.28 and 1,223,127,369.12 is: 1,687,948,958.95
Step by Step Solution
- Step 1: Write the proportion equation
2,162,784,211.68 : 2,984,700,899.28 = 1,223,127,369.12 : x - Step 2: Convert to fraction form
2,162,784,211.68/2,984,700,899.28 = 1,223,127,369.12/x - Step 3: Cross multiply
2,162,784,211.68x = 2,984,700,899.28 × 1,223,127,369.12 - Step 4: Simplify right side
2,162,784,211.68x = 3,650,669,358,546,444,288 - Step 5: Solve for x
x = 3,650,669,358,546,444,288/2,162,784,211.68 - Step 6: Final answer
x = 1,687,948,958.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.