Finding the Fourth Proportional to 1,305,328,507.20, 1,957,418,191.68 and 691,768,981.44
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Solution
The fourth proportional to 1,305,328,507.20, 1,957,418,191.68 and 691,768,981.44 is: 1,037,348,974.79
Step by Step Solution
- Step 1: Write the proportion equation
1,305,328,507.20 : 1,957,418,191.68 = 691,768,981.44 : x - Step 2: Convert to fraction form
1,305,328,507.20/1,957,418,191.68 = 691,768,981.44/x - Step 3: Cross multiply
1,305,328,507.20x = 1,957,418,191.68 × 691,768,981.44 - Step 4: Simplify right side
1,305,328,507.20x = 1,354,081,188,710,600,448 - Step 5: Solve for x
x = 1,354,081,188,710,600,448/1,305,328,507.20 - Step 6: Final answer
x = 1,037,348,974.79
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.