Finding the Fourth Proportional to 391,163,246.40, 586,744,869.60 and 253,413,739.20
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Solution
The fourth proportional to 391,163,246.40, 586,744,869.60 and 253,413,739.20 is: 380,120,608.80
Step by Step Solution
- Step 1: Write the proportion equation
391,163,246.40 : 586,744,869.60 = 253,413,739.20 : x - Step 2: Convert to fraction form
391,163,246.40/586,744,869.60 = 253,413,739.20/x - Step 3: Cross multiply
391,163,246.40x = 586,744,869.60 × 253,413,739.20 - Step 4: Simplify right side
391,163,246.40x = 148,689,211,361,752,416 - Step 5: Solve for x
x = 148,689,211,361,752,416/391,163,246.40 - Step 6: Final answer
x = 380,120,608.80
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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.