Finding the Fourth Proportional to 391,663,875.36, 587,371,170.83 and 129,299,575.77
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Solution
The fourth proportional to 391,663,875.36, 587,371,170.83 and 129,299,575.77 is: 193,908,215.65
Step by Step Solution
- Step 1: Write the proportion equation
391,663,875.36 : 587,371,170.83 = 129,299,575.77 : x - Step 2: Convert to fraction form
391,663,875.36/587,371,170.83 = 129,299,575.77/x - Step 3: Cross multiply
391,663,875.36x = 587,371,170.83 × 129,299,575.77 - Step 4: Simplify right side
391,663,875.36x = 75,946,843,207,200,704 - Step 5: Solve for x
x = 75,946,843,207,200,704/391,663,875.36 - Step 6: Final answer
x = 193,908,215.65
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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.