Finding the Fourth Proportional to 1,213,056,121.20, 1,819,584,181.80 and 1,011,502,201.20
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Solution
The fourth proportional to 1,213,056,121.20, 1,819,584,181.80 and 1,011,502,201.20 is: 1,517,253,301.80
Step by Step Solution
- Step 1: Write the proportion equation
1,213,056,121.20 : 1,819,584,181.80 = 1,011,502,201.20 : x - Step 2: Convert to fraction form
1,213,056,121.20/1,819,584,181.80 = 1,011,502,201.20/x - Step 3: Cross multiply
1,213,056,121.20x = 1,819,584,181.80 × 1,011,502,201.20 - Step 4: Simplify right side
1,213,056,121.20x = 1,840,513,405,159,400,960 - Step 5: Solve for x
x = 1,840,513,405,159,400,960/1,213,056,121.20 - Step 6: Final answer
x = 1,517,253,301.80
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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.