Finding the Fourth Proportional to 1,971,373,811.85, 2,957,455,310.04 and 727,811,833.68
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Solution
The fourth proportional to 1,971,373,811.85, 2,957,455,310.04 and 727,811,833.68 is: 1,091,863,430.11
Step by Step Solution
- Step 1: Write the proportion equation
1,971,373,811.85 : 2,957,455,310.04 = 727,811,833.68 : x - Step 2: Convert to fraction form
1,971,373,811.85/2,957,455,310.04 = 727,811,833.68/x - Step 3: Cross multiply
1,971,373,811.85x = 2,957,455,310.04 × 727,811,833.68 - Step 4: Simplify right side
1,971,373,811.85x = 2,152,470,972,226,865,152 - Step 5: Solve for x
x = 2,152,470,972,226,865,152/1,971,373,811.85 - Step 6: Final answer
x = 1,091,863,430.11
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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.