Finding the Fourth Proportional to 1,108,972,208.20, 1,663,458,312.30 and 291,167,177.80
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Solution
The fourth proportional to 1,108,972,208.20, 1,663,458,312.30 and 291,167,177.80 is: 436,750,766.70
Step by Step Solution
- Step 1: Write the proportion equation
1,108,972,208.20 : 1,663,458,312.30 = 291,167,177.80 : x - Step 2: Convert to fraction form
1,108,972,208.20/1,663,458,312.30 = 291,167,177.80/x - Step 3: Cross multiply
1,108,972,208.20x = 1,663,458,312.30 × 291,167,177.80 - Step 4: Simplify right side
1,108,972,208.20x = 484,344,462,180,342,016 - Step 5: Solve for x
x = 484,344,462,180,342,016/1,108,972,208.20 - Step 6: Final answer
x = 436,750,766.70
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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.