Finding the Fourth Proportional to 1,107,218,138.10, 1,660,827,207.15 and 646,919,373.30
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Solution
The fourth proportional to 1,107,218,138.10, 1,660,827,207.15 and 646,919,373.30 is: 970,379,059.95
Step by Step Solution
- Step 1: Write the proportion equation
1,107,218,138.10 : 1,660,827,207.15 = 646,919,373.30 : x - Step 2: Convert to fraction form
1,107,218,138.10/1,660,827,207.15 = 646,919,373.30/x - Step 3: Cross multiply
1,107,218,138.10x = 1,660,827,207.15 × 646,919,373.30 - Step 4: Simplify right side
1,107,218,138.10x = 1,074,421,296,009,067,264 - Step 5: Solve for x
x = 1,074,421,296,009,067,264/1,107,218,138.10 - Step 6: Final answer
x = 970,379,059.95
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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.